REVIEWED PLN RESUB2 BLD2023-0692+ARBORIST REPORT+6.20.2024_8.40.35_AM+43331897103 210" St. SW
June 10, 2024
Page 1 of 7
BLD2023-0692
RESUB
Jun 20 2024
CITY OF EDMONDS
DEVELOPMENT SERVICES
DEPARTMENT
Job Address:
City, Zip:
Parcel number:
C/O:
Washington Tree Experts
9792 Edmonds Way #123
Edmonds, WA 98020
206-362-3380
wtetree@yahoo.com
7103 210" St SW
Edmonds, WA 98026
00566900100601
BK Chen
--------------
Reviewed by
City of Edmonds ;
Planning Division '
'---------------
Assignment
Tree inventory and tree retention/protection plan to meet city development standards.
Site Description
The trees are located on 11,201 square foot lot zoned multiple residential. According to the City
of Edmonds GIS map there are no environmentally critical areas. The site contains a duplex with
an unmaintained landscape. The trees are mostly situated along the perimeters of the property.
Summary
The City of Edmonds regulates significant trees defined as being over six inches in diameter at
standard height (DSH) on sites undergoing development. A site with proposed development of a
multifamily development is required to retain 25% of the significant trees.
I have reviewed the most current plans to construct a six -unit townhome complex and I have
made a site visit to provide basic visual assessment of the retention trees on June 5, 2024. The
following is outlined to comply with Edmonds Municipal Code ECDC 23.10.070. To reduce
confusion, I am using a numbering system previously created and used on the plans.
Trees are identified by genus, species, and by common name.
Trunk diameters were measured with a standard forestry measuring tape to the nearest inch at
the standard height of 4.5 feet above grade. Average driplines were measured. Health and
condition ratings have been applied based on best management practices and the arborist's best
judgement as excellent, good, fair, or poor.
Trees (see attached inventory and site map)
According to information provided by the client, 12 trees onsite will be removed due to
construction impacts and 4 trees will be retained and protected. The removal of the 12 trees will
not adversely affect the retention trees. Of the 16 trees total onsite there are 10 Doug fir, 3
western red cedar, 2 black locust, and one western pine. Additionally, there are 3 western red
Washington Tree Experts Certified Arborist
7103 210" St. SW
June 10, 2024
Page 2 of 7
cedar and 1 Doug fir on the adjacent property to the north with canopies that overhang the
property line that are included in the inventory and will be protected and retained.
Development Impacts and Tree Protection Areas/Zones (TPZ)
The purpose of the tree protection measures outlined here is to preserve tree health by avoiding
damage to roots, trunk, or live crown. A standard method of determining the critical root zone
(CRZ) is to equate it to the dripline measurement. For most trees, protection equal to the
dripline is sufficient to ensure viability after construction and is a good starting point. The tree
protection zone (TPZ) can be equal to the CRZ. If infrastructure cannot be located outside of the
generally measured critical root zone, the area can be reduced based on tree status and site
constraints. I have determined the TPZs on a case -by -case basis working with the plans while
protecting the inner critical root zones (ICRZs) of the trees which is the inner 50 percent of the
critical root zone. The TPZs outlined on the inventory will be sufficient to retain the trees
throughout the development project.
Following is the requested site specific special instructions for retention trees:
T1: To minimize root damage, hand -digging to excavate a two -foot -deep trench along the
proposed foundation line outside the tree protective zone, and to cleanly cut the roots of
retained trees with hand -tools. Never rip or shred roots with heavy equipment. When the
foundation is poured, the tree protection fence for T1 can be moved to the east side of the
walkway per the site plan to allow for the installation of a permeable walkway. The walkway path
should be created using gravel or sand at a depth of no more than 12". Care should be taken
during the process to prevent significant root disturbance. The path is to provide construction
workers a safe surface to travel on. The path will be the base for a permanent and permeable
walkway built with pavers, which will be installed properly with minimal root disturbance,
allowing water and nutrient penetration to the critical root zone. An arborist will be on site for
the consultation for the installation of the permanent walkway. Utility installation will be
tunneled and not excavated. TPZ should be watered throughout the construction period barring
rain.
B2 and 134: Before excavating the north side foundation for unit 6, a two -foot -deep trench along
the proposed foundation line outside the tree protective zone should be done by hand -digging.
Roots of the retained trees should be cleanly cut with hand tools outside of the TPZ. Never rip or
shred roots with heavy equipment. After the foundation is poured, the soil should be refilled to
the original grade, covered with 3" mulch. The retained trees should be watered throughout the
construction period barring rain.
Washington Tree Experts Certified Arbori
7103 210" St. SW
June 10, 2024
Page 3 of 7
These measures should be taken and should be included on the site plan sheets that detail
clearing, grading, or excavation work.
-Protect trees by complying with guidelines outlined in ECDC 20.10
- Tree protection fencing shall be installed as close as possible to the proposed foundation lines
while still providing access for the building construction.
- Said fencing shall be 3' tall and signage shall be placed on the fencing as per ECDC 23.10.070.
-NO disturbance in the TPZ with noted exceptions.
- NO root cutting in the TPZ.
-If stumps near retained trees are to be excavated, care must be given to potential encounters
with the roots of trees scheduled for retention. It would be better to leave the stumps in place or
have them ground below the surrounding grade.
-Pruning for building clearance must be performed by an experienced professional and should be
limited to less than 15% of live growth and done as per best management practices.
- Any bare soils inside the tree protection fencing should be covered with a maximum of 3" of
mulch material.
- Maintenance of trees throughout the construction period by watering.
- Retained trees shall be reassessed after project completion or within two years from the date
of this report for changing health, condition, or structure by completing a basic visual
assessment.
Washington Tree Experts Certified Arbori
7103 210" St. SW
June 10, 2024
Page 4 of 7
Standard tree protection detail
Crown drip line or other limit of Tree Protection area See
tree preservation plan for fence alignment.
85'edin
s
sign
0
laminated m
2c %
plastic spaced
every 50'
along the
KEEP OUT
fence
TREE
q PROTECTION
v AREA
SECTION VIEW
TREE PROTECTION
f
Washington Tree Experts Certified Arbori
ISA-ARBOR.COM
Notes
1- See specifications for additional tree
protection requirements.
2- If there is no existing imgalion, see
specifications for watenng requirements
3- No pruning shall be performed except
by approved arbonst.
4- No equipment shall operate inside the
protective fencing including during fence
installation and removal.
5- See site preparation plan for any
modifications with the Tree Protection
area
Tree Protection
fence High density
polyethylene fencing
with 3 5' x 1.5'
openings. Color -
orange Steel posts
installed at 8' oc.
2' x 6' steel posts
or approved equal.
5' thick
layer of mulch.
Maintain existing
grade with the tree
protection fence
unless otherwise
indicated on the
plans
UR6W TREE FOUNDATION C2014
OPEN SOURCE FREE TO USE
7103 210" St. SW
June 10, 2024
Page 5 of 7
Prepared by
8JNV��
Jennifer Wells
Certified Arborist #PN6209A
ISA Qualified Tree Risk Assessor
To prepare this report, I drew upon my formal education in arboriculture and training used to
obtain my International Society of Arboriculture credentials. Over my twenty-year career I have
worked with a diverse range of clients before, during, and after development projects with trees
I have been hired on a consult only basis.
Waiver of Liability
This information represents the tree health assessment at this point in time. My findings do not guarantee future safety nor are
they predictions of future event. Information contained in this report covers only those items that were examined and reflects
the condition of those items at the time of inspection. The inspection is limited to visual examination of accessible items without
dissection, excavation, probing, or coring.
Washington Tree Experts Certified Arbori
7103 210" St. SW
June 10, 2024
Page 6 of 7
Referenced Municipal Code
Edmonds Municipal Code ECDC 23.10.070
References
Dirr, Michael A. Monuol of Woody Landscape Plants Their Identificotion, Ornamental
Characteristics, Culture, Propagation, and Use. Stripes Publishing L.L.C., 2009
Smiley, E. Thomas, Nelda Matheny, and Sharon Lilly. Tree Risk Assessment (Best Management
Practices, Second Edition). Champaign: International Society of Arboriculture, 2017.
Arborists' Certification Study Guide. Champaign, IL: The International Society of Arboriculture,
2001. Matheny, Nelda and Clark, James R.
ANSI A300 Part 5-2019 Management of Trees and Shrubs During Site Planning, Site
Development, and Construction
Washington Tree Experts Certified Arbori
7103 210" St. SW
June 10, 2024
Page 7 of 7
Site map not to scale for illustration purposes only.
Trees B2 and B4 with
tree protection
fencing placed 7'-6"
4 E4ERGRFEN NATREE IVE Y6'S, ---_--�R&RDAA14
�}-c y„ 4 TOTALI
.w
Aa ApY
'i -2110
sr FLR
FLR
(E) OVER
POWER UN
I-. GRADED TO OR
_ R•'Ci � i -+ST
FLR
E%ISTING
� GRADE
15 NEW TAYLOR JJNPER. •p
ALONG 1HE WEST P L
(SEE NOTE 2)
TYPE 1 CB
RM 406
REFER TO NOTES
3 AND 6 IN SDI SHT
4
6
FF=407.84'
FLR
FF=407.18'
FLR
FLR
FF-406.81'
"sr FLR
2NO FLR
-BALCONY
-3RD FLR
FF=406.5'
-1ST FLR
Neighboring trees with
protection fencing
placed at 9'-8" from
AY
_ 21 NAM sq,T�pWEy
>A[L; Aldq EAST P.
C .W. I ROVIM NT
suamp W/sOl1D VD.
REFER TO NOTE ,/501.
�>'3'a4'
INFILTRATION TRENW,
REFER 70 NOTE 4/SD1.
NEW NAIVE EVERGREEN
RIFFS ALONG SOUTH P.L.
_
(SEE NOTE 1)
210
TH ST SW
LANDSCAPE REQUIREMENTS:
>�y,
a. A landscape plan meeting the requirements
JeTp,CDRyQI
of ECDC20.13.010 is provided in this submission.
f`�
b. A Type 2 landscaping has been included along
northern border of the property in the landscape
U STEPS
plan, Type 3 landxaping has been designed on
the plan far the rest of 3 sides of the property.
a Type 3 landscaping Is required for the
eOstem, Western, and southern property lines.
\RESTORE
EXSTING TREE
Tree T8 with
protection
fencing placed
9 NEW NATIVE
FTU STEEL.
5'-6" from trunk
ALONC EAST P,L
ALONG
NEW NATIVE EVERGREEN
TREES. ALONG EAST P.L.
(SE NOTE 2)
GARBAGE/TECYCL.
TYP
tG-0'
4=0•
Trees to t _ kept
Tree T1 with tree
v
V)
protection fencing
placed 8'-11" from
m
trunk
LANDSCAPING PLAN
F-,' COVC. WALKWAY
111
W.T: t• _ w
�iER TO NOTE 5/sD1.
-
SEE SDI SHEET FOR STORM
WRIER DESIGN DETAILEs
I' CORNER
sTEED FIOQ.Y SRRGTY5--
3.5' TAIL. Ty-.
(SEE NOTE 1)
® HEAT PJMP
GARBAGE
RECYCL
Washington Tree Experts Certified Arbori