HomeMy WebLinkAboutPermit PL11-051 - CLEMENT MARK - TREE PERMITBOEING DUWAMISH
TREE REMOVAL
11201 TUKWILA INTL BLVD
PL1 1-051
LII-009
TREE REMOVAL
PERMIT
City of Tukwila
Jim Haggerton, Mayor
Department of Community Development Jack Pace, Director
March 2, 2011
NOTICE OF DECISION
TO: Mark Clement, Applicant
Boeing Company, Owner
King County Assessor, Accounting Division
Washington State Department of Ecology
This letter serves as a notice of decision and is issued pursuant to TMC 18.104.170 on the following project and
permit approval.
I. PROJECT INFORMATION
Project File Number: L11-009 (Tree Permit)
Applicant: Mark Clement, Boeing Company
Type of Permit Applied for: Tree Clearing Permit
Project Description: The project proposal is to obtain a tree clearing permit to remove 107 Poplars from the
shoreline zone of the Duwarnish River, and to obtain approval for a tree replacement planting plan.
Location: 11201 Tukwila International Blvd (parcel #0923049155)
Associated Files: PL10-061 (Land Use Project Number)
Comprehensive Plan
Designation/Zoning
District: Manufacturing Industrial Center/Heavy (MIC/H) District
II. DECISION
SEPA Determination: The City SEPA Responsible Official has previously determined that this application does
not require a SEPA threshold determination because it is categorically exempt.
Decision on Substantive Permit: The City Community Development Director has determined that the application
for a Tree Clearing Permit does comply with applicable City and state code requirements and has approved
removal of 107 Poplar trees with the following conditions:
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1. The 60 Pacific Ninebark plantings proposed in the replanting plan shall be substituted with Mock
Orange plantings to help encourage long term survival of replacement plantings.
2. Follow the attached "Native Plant Wetland, Stream, and Slope Planting Guidelines" for best practices in
site preparation and planting, to ensure the replacement plantings' long-term health and survival.
3. The applicant, property owner, and tree removal contractor shall comply with the International
Migratory Bird Treaty Act. Every tree removed after February 28, 2011shall be inspected for any type of
nest of any migratory bird. If the presence of any nest is detected, the particular tree in which the nest is
located shall be taped off and a later date for tree removal shall be determined and coordinated with the
City of Tukwila. The Davey Tree Expert Company shall submit a written statement which details the
presence or absence of nests observed during tree removal which occurs after February 28, 2011
M. YOUR APPEAL RIGHTS
The Decision on this Permit Application is a Type 1 decision pursuant to Tukwila Municipal Code § 18.104.010.
Other land use applications related to this project may still be pending.
One administrative appeal to the City Hearing Examiner of the Decision on the Permit itself is permitted. A party
who is not satisfied with the outcome of the Hearing Examiner appeal process may file an appeal in King County
Superior Court from the Hearing Examiner's decision.
IV. PROCEDURES AND TIME FOR APPEALING
In order to appeal the Community Development Director decision on the Permit Application, a written notice of
appeal must be filed with the Department of Community Development within 14 days of the issuance of this
Decision; that is by March 16, 2011.
The requirements for such appeals are set forth in Tukwila Municipal Code ch. 18.116. All appeal materials
shall be submitted to the Department of Community Development. Appeal materials MUST include:
1. The name of the appealing party.
2. The address and phone number of the appealing party; and if the appealing party is a corporation,
association or other group, the address and phone number of a contact person authorized to receive notices
on the appealing party's behalf.
3. A statement identifying the decision being appealed and the alleged errors in the decision, including any
specific challenge to an MDNS.
4. The Notice of Appeal shall identify (a) the specific errors of fact or errors in application of thelaw in the
decision being appealed; (b) the harm suffered or anticipated by the appellant, and (c) the relief sought. The
scope of an appeal shall be limited to matters or issues raised in the Notice of Appeal.
5. Appeal fee of $515.
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V. APPEAL HEARINGS PROCESS
Any administrative appeal regarding the Permit shall be conducted as a closed record hearing before the
Hearing Examiner based on the information presented to the Community Development Director, who made the
original decision. No new evidence or testimony will be permitted during the appeal hearing. Parties will be
allowed to present oral argument based on the information presented to the Community Development Director
before their decision was issued. The Hearing Examiner's decision on the appeal is the City's final decision.
Any party wishing to challenge the Hearing Examiner's decision on this application must file an appeal
pursuant to the procedures and time limitations set forth in RCW ch. 36.70C. An appeal challenging a DNS, an
MDNS or an EIS may be included in such an appeal. If no appeal of the Hearing Examiner's decision is
properly filed in Superior Court within such time limit, the Decision on this permit will be final. The City's
decision to issue a DNS, an MDNS or an EIS is final for this permit and any other pending permit applications
for the development of the subject property.
VI. INSPECTION OF INFORMATION ON THE APPLICATION
Project materials including the application, any staff reports, and other studies related to the permits are available
for inspection at the Tukwila Department of Community Development, 6300 Southcenter Blvd., Suite 100,
Tukwila, Washington 98188 from Monday through Friday between 8:30 a.m. and 5:00 p.m. The project planner is
Jaimie Reavis, who maybe contacted at 206-431-3659 for further information.
'Property owners affected by this decision may request a change in valuation for their property tax purposes.
Co tact the King C. ty • ssessor's Office for further information regarding property tax valuation changes.
De ent o'ro , •.'unity Development
Ci . Tukwila
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Page 3 of 3
03/01/2011
City of Tukwila
Jim Haggerton, Mayor
Department of Community Development Jack Pace, Director
MEMORANDUM
DATE: February 25, 2011
TO: Jack Pace, Director, Department of Community Development
FROM: Jaimie Reavis, Assistant Planner
RE: L11-009 Tree Clearing Permit for Boeing Duwamish Towers (Phase II)
BACKGROUND: The City of Tukwila was contacted in November 2010 by staff from the Boeing Company
regarding several mature Poplar trees located on the Duwamish Towers site within the 200-foot shoreline buffer
of the Duwamish River. Boeing staff expressed concern that the trees are hazardous due to several incidents in
which branches on the trees failed and broke off, landing in the Duwamish Towers parking lot. Pictures
submitted by the applicant showed damage to a vehicle in the parking lot due to a branch failure, clearly
demonstrating how that the Poplar trees met the definition of a Hazardous Tree in Tukwila Municipal Code
(TMC) section 18.06.395. This definition states that a "Hazardous tree" means a tree with a structural defect or
disease,. or which impedes safe vision or traffic flow, or otherwise currently poses a threat to life or property."
In light of the recent branch failures, the applicant requested permission to remove the hazardous trees prior to
applying for a tree clearing permit. The Davey Tree Expert Company explained that the trees on the site have
had to be pruned repeatedly to remove dead branches in an effort to abate the potential for failure. Due to the
structural damage consistent with Poplars of this age, including retention of an excessive amount of moisture,
presence of a large number of nesting holes, and tip of crown dieback combined with poor taper, pruning is no
longer a reasonable abatement action to remedy the potential threat posed by failures. City staff agreed that any
trees which posed a threat to life and/or property should be removed as soon as possible.
The Boeing Company proposed to complete the tree removal and replanting in two phases. A Tree Clearing
Permit was issued for Phase I on January 20, 2011. Phase I included removal of 33 Poplars, and a replanting
plan that includes 196 replacement trees and shrubs native to the Pacific Northwest. A Tree Clearing Permit was
submitted for Phase II on February 9, 2011. Phase II proposes removal of 107 Poplars, for which a total of 740
replacement plantings are required. The replanting plan includes 1,040 replacement plantings, most of which
will consist of willow stakes to be planted along the shoreline of the Duwamish River on the west side of the
Duwamish River Trail. Other plantings proposed on the east side of the trail include 50 Shore Pines, and 60
plantings each of Red Currant, Pacific Ninebark, Serviceberry, and Vine Maples. Pacific Ninebark plantings
will not tend to thrive unless they receive a lot of watering. Mock Orange plantings were suggested as a
substitution by the applicant, and are a native species to the Pacific Northwest which staff deemed an
appropriate substitute which will require less water. This substitution, replacing the 60 Pacific Ninebark
plantings with 60 Mock Orange plantings, is added as a condition of approval of this permit to help encourage
long term survival of the replacement plantings (see attached redlined copy of replanting plan). The replacement
plantings proposed are native to the Pacific Northwest, and are therefore appropriate for planting within the
200-foot shoreline zone from the Duwamish River. Note that, per TMC 18.54.130, section c. (1): Minimum
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03/01/2011
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sizes shall be 2.5-inch caliper for deciduous trees, 6 to 8 feet in height for evergreen trees, 24 inches in height
for shrubs, and 1 gallon for groundcover.
According to TMC 18.54.130, section c.(3), "Planting and maintenance of required replacement vegetation shall
be in accordance with best management practices for landscaping which ensure the vegetation's long-term
health and survival." As a condition of approval, site preparation and planting shall follow best practices as
outlined on the attached "Native Plant Wetland, Stream, and Slope Planting Guidelines" handout to ensure the
replacement plantings' long-term health and survival.
Staff received one public comment by email during review of this project. The comment was primarily related
to concerns about the timing of tree removal, considering that nesting season is rapidly approaching.
Additionally, the comments included questions about when replanting would occur, the types and quantities of
plantings that are proposed for Phases I and II, and a request for clarification about the location of the tree
removal to ensure that the trees to be removed are located entirely on the Duwamish Towers site and not on the
Boeing Oxbow site. Staff provided information on the types and quantities of plantings proposed for phases I
and II, and that planting will most likely begin in March. Staff also clarified that all tree removal associated
with the permits for phases I and II is located on the Boeing Duwamish Towers site.
The person who submitted comments forwarded the following information, which he received from the
Audubon Society:
"With that said nesting season early March through late July is the critical time not to remove trees.
Tree cutters during this time are supposed to ensure there are no nesting birds present. The removal of a
nest with young or eggsis technically against Federal Law (the international migratory bird treaty act).
However, as you might guess this law is almost never enforced. "
Originally, staff responded that a condition of approval could be added to the permit, to require that all tree
removal for phases I and II be completed by February 28, 2011. However, after discussing this condition with
the applicant on February 18, 2011, staff discovered that it would be unlikely that Boeing would be able to
comply with such a condition of approval. The applicant agreed to remove as many trees as possible prior to the
end of February, and stated that the arborist, Davey Tree Expert Company, could ensure that every tree will be
inspected for any type of nest of any migratory bird beginning March 1, 2011. That applicant stated. if the
presence of any nest is detected, the particular tree in which the nest is located will be taped off and a later date
for tree removal would be determined and coordinated with the City of Tukwila. As a condition of approval, the
Davey Tree Expert Company shall submit a written statement which details the presence or absence of nests
observed during tree removal which occurs after February 28, 2011.
RECOMMENDATION: Approve removal of all 107 Poplars, with the following conditions:
1. The 60 Pacific Ninebark plantings proposed in the replanting plan shall be substituted with Mock
Orange plantings to help encourage long term survival of replacement plantings.
2. Follow the attached "Native Plant Wetland, Stream, and Slope Planting Guidelines" for best practices in
site preparation and planting, to ensure the replacement plantings' long-term health and survival.
3. The applicant, property owner, and tree removal contractor shall comply with the International
Migratory Bird Treaty Act. Every tree removed after February 28, 2011shall be inspected for any type of
nest of any migratory bird. If the presence of any nest is detected, the particular tree in which the nest is
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located shall be taped off and a later date for tree removal shall be determined and coordinated with the
City of Tukwila. The Davey Tree Expert Company shall submit a written statement which details the
presence or absence of nests observed during tree removal which occurs after February 28, 2011.
The applicant shall arrange an inspection of the plantings once they have been delivered to the project site. An
additional, final inspection, shall occur once the plantings have been installed. The final inspection will include
a check to make sure all plantings are served by the existing irrigation system.
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Page 3 of 3 03/01/2011
Message Page 1 of 1
Jaimie Reavis - plant list for Boeing Duwamish
From: "Leonard Wyman"
To: "DeNune, Darrel L" ,
Date: 03/30/2011 9:56 AM
Subject: plant list for Boeing Duwamish
CC: "Timothy Trevillian"
Hi Jaimie,
Here is the final plant list for Boeing Duwamish, Everything is planted and ready for
inspection.
158 - Pinus Contorta
72 - Amalachier Alnifolia
32 - Red twig dogwood (15 Gal.)
6 - red twig dogwood (5- Gal.)
112 - vine maple
60 - red currant
60 - Moch orange
15 - Alaska cedars
24 - Mahonia
3 - Douglas fir
3 - Western red cedar
750 - Willow plugs
If you have any questions or need any additional information please feel free to contact me.
Thank you
Leonard Wyman CLT
Account Manager
Teufel Nursery Inc.
Office # (253)373-0344
Cell # (206)375-1149
Ieonardw@teufel.com
file://C:\Temp\XPgrpwise\4D92FE4Etuk-mai16300-po 100168626D 1122F... 04/06/2011
City of Tukwila
yDepartment of Community Development
6300 Southcenter Boulevard, Suite #100
Tukwila, Washington 98188
Phone: 206-431-3670
Fax: 206-431-3665
Web site: http://www.ci.tukwila.wa.us
RECEIPT
ParcelNo.: 0923049155 Permit Number: L11-009
Address: 11201 TUKWILA INTERNATIONAL BL TUICW Status: PENDING
Suite No: Applied Date: 02/09/2011
Applicant: CLEMENT, MARK Issue Date:
Receipt No.: R11-00252
Initials:
User ID:
JR
1659
Payment Amount: $50.00
Payment Date: 02/09/2011 03:19 PM
Balance: $0.00
Payee: MARK CLEMENT
TRANSACTION LIST:
Type Method Descriptio Amount
Payment Credit Crd MC
Authorization No. 096989
ACCOUNT ITEM LIST:
Description
50.00
Account Code Current Pmts
SIGN PERMIT
000.322.100 50.00
Total: $50.00
doc: Receipt-06 Printed: 02-09-2011
CITY OF TUKWILA
Department of Community Develd
6300 Southcenter Boulevard, Tukwila, WA
Telephone: (206) 431-3670 FAX (206) 431
E-mail: tukplanAci.tukwila.wa.us
t ,�,�\ TREE
�0 CLEARING
M�U M�
oE,,ti��p PERMIT
APPLICATION
FOR STAFF USE ONLY Permits Plus Type: P-TREE
Planner: (hAt e 1ecl , .
s
File Number: L. 1(— 0b q
Application Complete (Date:
)
Project File Number:
Application Incomplete (Date:
)
Other File Numbers:
NAME OF PROJECT / DEVELOPMENT: 9;00C , A 5 p W N` ' 51 0 ‘14 c'I S Q l Asc.
cneV"a. y I a t t„�; a, �t �fi;� c j vos
LOCATION OF PROJECT/DEVELOPMENT: Give street address or, if vacant, indicate lot(s),
block and subdivision, access street, and nearest intersection.
\\ a.ct '�•, c,-\IN\ ,R,\'c '0\ )VIN cobq
29ZS S I/Z- 5-}vic'f 1i1)k4: 1n kr,/A e7q16ti
LIST ALL TAX LOT NUMBERS (this information may be found on your tax statement).
0 9 30 11 9 /XS
DEVELOPMENT COORDINATOR :
The individual who:
• has decision making authority on behalf of the owner/applicant in meetings with City staff,
• has full responsibility for identifying and satisfying all relevant and sometimes overlapping development
standards, and
• is the primary contact with the City to whom all notices and reports will be sent.
\ANY- C kelp A
Name:
Address: 'e 0 a' 3101 MC. \kr► —01 0 4 1 LA
Phone: .Z L (, ( 1 — Z i 4 FAX: 2 c ti Sri Li-1-5 31
E-mail: r^ A" eS• CI “A ANC)
Signature:
Date:
Check items
submitted with
application
Information Required.
May be waived in unusual cases, upon approval of both Public Works and Planning
11 (a) Landscape planting plan by a Washington State licensed landscape architect, surveyor or
certified arborist. Maximum size 24" x 36".
(b) Diameter, species name and location of all existing significant trees and vegetation to be
retained.
(c) .Diameter, species name, spacing, size and location of replacement trees/vegetation to be
used to replace vegetation cleared per TMC 18.54.130 3 b.
(d) Proposed tree protection measures (for example fencing at drip line).
(e) Identify measures proposed for mitigation of vegetation clearing in a sensitive area
and/or its buffer per the Environmentally Sensitive Areas chapter of the Zoning Code, TMC
18.45.
(0 Any other measures proposed to restore the environmental and aesthetic benefits
previously provided by on -site vegetation.
1908
CITY OF TUKWILA
Department of Community Development
6300 Southeenrer Boulevard. Tukwila, 11:-1 93133
Telephone:: 1206) 431-3670 FAX (206)=131-366?
E-mail: t,:`.<.nian.O;:i.ttrvtii2.94.:.Ls
AFFIDAVIT OF OWNERSHIP AND HOLD HARMLESS
PERMISSION TO ENTER PROPERTY
STATE OF WASHINGTON
COUNTY OF KING
The undersigned being duly sworn and upon oath states as follows:
t. l am the current owner of the property which is the subject of this application.
?. All statements contained in the applications have been prepared by me or my agents and are true and correct to the
best of my knowledge.
3. The application is being submitted with my knowledge and consent.
4. Owner grants the City. its employees, agents, engineers, contractors or other representatives the right to enter upon
Owner's real property. located at
ss
for the purpose of application review. for the limited rime necessary to complete that purpose.
5. Owner agrees to hold the City harmless for any loss or damage to persons or property occun•img on the private
property during the City's entry upon the property. unless the loss or damage is the result of the sole negligence of
the City.
6. Non -responsiveness to a City infonmation request for ninety (90) or more days. shall be cause to cancel the
application(s) without rehrnd of fees.
EXECUTED at I V`'t -ti7
(citv). V V 1'l" (state). on t3
Print Name VI U 1 �QM
Address
Phone Number
. 20 10
Signature et...L._
(02-2.7)^
r
On this day personally appeared before me Ei'i C deg114e-i,,jc to me known to be the individual who
executed the foregoing instrument and acknowledged that'si=red the dine a9�11 ic5r voluntary act and deed for the uses and
purposes mentioned therein.
SUBSCRIBED AND SWORN TO BEFORE ME ON THIS14,
DAY OF 1 Gs,A4bpi . 20 /
.OTARY PUBLIC' in and for the State of Washington
Notary Public
State of Washington
MARIO A CORONADO
My Appointment Esplrei Sep 24, 2011
residin_at
NIv Commission expires on Q 2 � 00 11
COW140iIr1C:L
TCPA ACCREDITED
CXPAPNNY
February 3, 2011
Mr. Darrel DeNune
Boeing Corporation
Re: Duwamish Towers Phase 2 Poplar Trees
DAVEY.
Proven Solutions for a GrrrwingWorld
Dear Darrel,
The Davey Tree Expert Company is pleased to submit the following arborist report for the Phase 2 Poplar trees. Please refer to the
attached site photo which indicates the Phase 2 tree locations.
As with the Phase 1 trees, we have had to repeatedly prune these trees over the years to remove dead branches/tops in an effort to
abate failure potential. The continuing widespread failure of branches causes me to again recommend more drastic measures to
safeguard Boeing employees, trail users and property. As it was with the Phase 1 trees the age class of these poplars is mature to
over-mature/senescent. This age class exacerbates the already inherent failure patterns of the species which, according to the
Evaluation of Hazard Trees in Urban Areas by Nelda Matheny and James Clark includes: trunk failure in high winds, often
associated with Hypoxylon cankers, which was the cause of the large tree failure onto the truck. Root failure due to susceptibility to
Armillaria root rot. And branch failure due to poor taper and/or crown dieback, which was the cause of the failure that destroyed the
seating bench adjacent to the trail.
The amount and extensiveness of the branch failures continues to be severe and it is again fortunate nobody has been injured.
Attached please find the Tree Risk Assessment Form which, for each tree details the defects, assigns a Risk Rating and provides a
treatment recommendation. You will see the treatment recommendation is to removal all 107 trees in the Phase 2 areas. Even
though some of the smaller, suppressed trees may not pose as serious a threat as the majority large trees, I felt that it would be wise
to remove them to allow a much better long term plan for replacement plantings.
Arborist Disclosure Statement
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 risk of living near trees. Clients may choose to accept or disregard
the recommendations of the arborist or, to seek additional advice.
The Davey Tree Expert Company is pleased to be of assistance with the tree care concerns of the Boeing Corporation. Should you
have any questions or require further clarification, please contact my office.
Sincerely,
The Davey Tree Expert Company
Rick Castro, District Manager
ISA Certified Arborist # PN-0179A
PNW-ISA Certified Tree Risk Assessor # 597
Attachments: Tree Risk Assessment Form and Threshold Tables
Sample defects photos
x • ,s�4-3%0 +r • ; eehr • .ewer
Phase 2
750EA
Willow
plugs
TON'..
s
112 STREET
Plant (back
side of
existing plant
beds)
Plant 290
notive trees/
shrubs per
specification
PLANTING PLAN DETAAL (PHASE I) 11-14 POPLAR
RE -PLANTING PLAN
Tree Diameter (Poplar's removed)
(multiplication factor)
(8-12"d) = 4 (4x2) = 8
(12-18') = 20 (20x4) = 80
(18-24') = 7 (22x6) = 132
(> 24) = 13 (61x8) = 488
_ Replacement count: 708 tree's
Total County 708 EA
PLANTING DETAIL
Red Currant <Ribes
Sanguineum
dflc N1ne r-< /A c c t. (O rMI e-
Serviceberry and v
Vine Maple
5 gallon, planted 4'
on center In 2=3'
mulch (60EA,240T).
Pinus Contorta
'Shore Pine' 6-8'
b&b, planted 9' on
center(50EA)
750EA Pacific/
Scouler's Willow
plugs in shoreline
area's of removed
tree's (stump's to
be above grade to
avoid soll
disturbance) Plugs
will be mulched and
maintained for
weed's until mature.
TREE RISK ASSESSMENT FORM
LOCATION:Boeing Duwamish DATE: Jan. 29, 2011 ASSESSOR: Rick Castro, Davey Tree Certified Tree Risk Assessor # 597
PHASE II
Defects legend: 1=Root crown
wound/injury; 2=Trunk wound/injury;
3=Trunk decay/nesting holes;
4=Previous scaffold/branch failure;
5=Tip/branch dieback; 6=Trunk canker;
7=lean/asymmetry; 8=Poor
scaffold/branch taper
Probability
of failure
Size of
part
Target
rating
Overall
Risk Rating
Treatment
Recommendation
Location
Tree #
Species
DBH
1-5 points
1-3 points
1-4 points
3-12 points
Lombardy poplar _��
31 5
2,6,7 8 S ��. ���,rfi,..
�w. .a .4
_ ,.. �'� 3
: 4
' : 11
Remove tree``
North'end,.west of trail',
2
Lombardy poplar
18
L ay- (P 2,6,8
4
2
4
10
Remove tree
North end, west of trail
3
Lombardy poplar
35 5
y, t 2,6 8
43
,.s_,. 4
11
Remove tree ._
North end, west of trail :
4
Lombardy poplar
20.6
2,6,7,8
4
3
4
11
Remove tree
North end, west of trail
5
Lombardy poplar
27
"'`1,6 8 I:4,'4
, ... +,'E 3
, , .'.4
11
Remove tree.
North end, west of trail
6
Lombardy poplar
32.2
$ 1,6,7,8
4
3
4
11
Remove tree
North end, west of trail
7
Lombardy. poplar
.. 36
R' ,; . ,: ,' ! ,2,6,7,8 £,
h 4
s... 3
.4
11
Remove tree
North end, west of trail
8
Lombardy poplar
13.2
if 5,6,8
4
2
4
10
Remove tree
North end, west of trail
:9
Lombardy poplar;r--
, x 36
_ ,6,8
�. - 4
3
4
11
Remove,tree
North end, west of trail
10
Lombardy poplar
42
$ 1,6,8
4
3
4
11
Remove tree
North end, west of trail
11
Lombardy' poplar It
'18
t- cp.. - 6,7 8 s ..
4
; 2
4
10
Remove tree '
North end, west of trail ,
12
Lombardy poplar
29
cg 2,5,6,8
4
3
4
11
Remove tree
North end, west of trail
13
Lombardy'poplar
= 36
S '_ ... z1,2,6,7,8 , .
4
.,;% 3
:4
'r11
Remove tree
North end, west of trail
14
Lombardy poplar
36
' 1,2,6
3
3
4
10
Remove tree
North end, west of trail
15
Lombardy,poplara-
15.8
4-J- , r1,2;4,6,8 r`.. z -. ,u
4
2
.4
' i m 10
Remove tree
North'rend, west of trail
16
Lombardy poplar
30.4
' 2,4,6,8
4
3
4
11
Remove tree
North end, west of trail
17
Lombardy poplar'
q 18.4
.(p s,. u .1,2,6,7,
4
.2
n ; . k°4
,- 10
Remove tree .
North end, west of trail
18
Lombardy poplar
30.5
S' 2,4,6,8
4
3
4
11
Remove tree
North end, west of trail
19
L"ombardy.'poplar
<' 37:8
--,2;4 5 6,8
,n <''4
„ , 3
F 4
> 11
Remove tree
North end, west of trail
20
Lombardy poplar
11.8
2 Dead
4
2
4
10
Remove tree
North end, west of trail
i'•.
21
::4,t
Lombardy poplar,rz,.
iC; ',
.. 440.6
'"'�.,V S k "���i�n' '^s'"` 'i3'aa
: fit ,: 1;2,4 6,8 t ..
ti .;-`3> 4
4 i� M14r ��'
; . , 3
"i ,. :4
ti"" ,:k .s,�h";s};:
�� ,11
ll
Remove tree °
North end, west of trail
22
Lombardy poplar
13
2 2,6,7,8
4
2
4
10
Remove tree
North end, west of trail
23
Lombardy Poplar;:,,
is ;_36 5
.6,.. ... ' 1,2,6 7,8 = . , x:
„; 4
3
4
" '<A 11
Remove tree
North'end, west of trail "
24
Lombardy poplar
30
q 1,2,3,4,6,7,8
4
3
4
11
Remove tree
North end, west of trail
TREE RISK ASSESSMENT FORM
25
26
27
28
29
30
Lombardy,poplar:;:-•
32
4033
34
36
.37
38
39
40
42
Lombardy poplar
LOMbardTpOplark
Lombardy poplar
LberribedY;P'OPlatt
Lombardy poplar
14
18
-24.2
38
,37:4
21
LOMbeedji Poplar
Lombardy poplar
Lombardy poplar
Lombardy poplar
Lombarciyijoplart:'
Lombardy poplar
Lornbardy poplar
Lombardy poplar
39.5
21
3618
16.6
S.142&:2
12
kg"29.6
20.5
Dead
cry 6, 1,2,4,6,7,8
53' 2,4,6,7,8
(AP
2,4,6,8
4
4
4
4
2
3
3
4
4
4
4
0
10
11
11
Remove tree
Remove tree
Remove tree -,
Remove tree
Remove tree
Remove tree
North end, west of trail
North end, west of trail
North end; west of trail
North end, west of trail
North end; west of trail -
North end, west of trail
1,2,6,7,8
1,2,6,7,8
a- Lt 1,2,6,7,8
2,5,T
1,2,6,7,8
4
4
4
4
3
2
2
3
4
4
4
4
11
11
10
-1•1
10
11
11
Remove tree
Remove tree
Remove tree
Remove tree
Remove tree
Remove tree
Remove_tree-;;,-„
Remove tree
North end, west of trail
Boeing side of trail
Boeing side of trail
Boeing side of trail
Boeing side of trail
Boeing side of trail
Boeing Side of trail
Boeing side of trail
Lombardy Pbrilar-'
Lombardy poplar
Lombardy. poplar
Lombardy poplar
25.6
18
4,17 .9
35.1
2,6,7,8
1,2,5,6,7,8
4
4
2
3
4
4
,411
10
11
Remove tree
Remove tree
Remove tree r
Remove tree
Boeing side of trail
Boeing side of trail
Boeing side'of trail
Boeing side of trail
Lon-tbardyPoplar,
44
45
46
47
48
49
50
51
52
Lombardy poplar
a9 8
24.2
2,4,6,7,8
4
3
3
4
11
11
RernoVe
Remove tree
Boeing side of trail.
Boeing side of trail
Lombardy,poplar
Lombardy poplar
Lombardy poplar
Lombardy poplar
Lombardy poplar
-
Lombardy poplar
Lombardy poplar
Lombardy poplar
22.8
25.2
24
37.1
29.4
26
31.5
20
2,5,6,7,8
1,2,6,7,8
2,5,6,8
2,6,7,8
4
4
1.,044gS4
4
4
4
s-3
3
3
3
•;1:, 3
3
4
4
4
4
- 4
4
11
11
11
11
11
11
4.4.i.4.; 1
11
Remove tree'
Remove tree
Remove tree
Remove tree
Remove tree
Remove tree
Remove tree
Remove tree
Boeing side of trail
Boeing side of trail
Boeing side of trail
Boeing side of trail
Boeing side of trail
Boeing side of trail
Boeing side of trail
Boeing side of trail
54
55
Lombardy poplar,
Lombardy poplar
Lombardy poplar
.24
31.6
26.2
2,4,6,7,8
4
3
3
-- 3
4
4
- 4
- 11
11
Remove tree
Remove tree
Remove tree
Boeing side of trail
Boeing side of trail
Boeing side of trail
TREE RISK ASSESSMENT FORM
56 Lombardy poplar
26.5 6
2,4,6,7,8
4
3
4
11 Remove tree
Boeing side of trail
57
L'OrribardYlOOPlar$
fRom,i-F4
.14
-1 1
Remove tree
Boeing side of trail
58
Lombardy poplar
26.9
1,2,5,6,7,8
4
3
4
11
Remove tree
Boeing side of trail
59
Lombardy poplar-2'
4
•'-ft11
Remove tree
Boeing side of trail
60
Lombardy poplar
26.9
1,2,5,6,7,8
4
3
4
11
Remove tree
Boeing side of trail
61
Lbrnbardypoplar
;20.5
11
Remove tree
Boeing side of trail
62
Lombardy poplar
23.5
1,2,5,6,8
4
3
4
11
Remove tree
Boeing side of trail
-s6A,63
Lombardy,poplar4
.r(b?gijlg!kidil
Remove tree'
Boeing side of trail
64
65
Lombardy poplar
Lornbardy'poplar:
22.5
1,2,6,7,8
4
3
4
11
Remove tree
Remove tree
Boeing side of trail
Boeing side of trail
66
Lombardy poplar
22.5
1,2,6,7,8
4
3
4
1 1
Remove tree
Boeing side of trail
LOnlbaildYlOOPiarit
'414'11
Remove tree
Boeing side of trail
68
Lombardy poplar
25
1,2,4,6,8
4
3
4
11
Remove tree
Boeing side of trail
-69
Lonibardi.00Plart
3
Remove tree
Boeing side of trail
70
Lombardy poplar
33
2,3,4,5,6,7,8
4
3
4
11
Remove tree
Boeing side of trail
71
Lombardy poplar
37.5
.11
Remove tree
Boeing side of trail
72
73
Lombardy poplar
30
33.2
1,2,6,8
4
3
4
11
.1
Remove tree
Remove tree
Boeing side of trail
Boeing side of trail
74
Lombardy poplar
26.5
air
1,2,4,6,7
4
3
4
11
Remove tree
Boeing side of trail
•kiti075
L�mbardypoptar
;''H3
--
11
Remove tree
Boeing side of trail
76
Lombardy poplar
28.3
2,4,6,8
4
3
-4
11
Remove tree
Boeing side of trail
Lombardy poplar-;,
44.5
4
Y 11
Remove tree
Boeing side of trail
78
Lombardy poplar
34
1,7,8
4
3
4
11
Remove tree
South end, west of trail
79
Lombardy .poplar4
36
;6;7,
4
- 1 1
Remove tree.
South end, west of trail
80
Lombardy poplar
24
cre-if 1,2,6,8
4
3
4
11
Remove tree
South end, west of trail
Lombardy poplar'
,11
Remove tree
South end, west of trail.
82
Lombardy poplar
24
, err ir 1,2,4,6,8
4
3
4
11
Remove tree
South end, west of trail
-83
84
Lombardy poplar:
Lombardy poplar
28
30
1,2,6,8.
1,2,6,7,8
4
4
3
4
11
11
Remove tree
Remove tree
South end, west of trail
South end, west of trail
Lombardy poplar
18
10
Remove tree
South end, west of trail
86
Lombardy poplar
16
1,2,6,7,8,
4
2
4
10
Remove tree
South end, west of trail
Lombardy poplar, ‘,
-18
4
Remove tree
South end, west of trail
88
Lombardy poplar
' 12
ev• y 1,2,6,7,8
4
2
4
10
Remove tree
South end, west of trail
TREE RISK ASSESSMENT FORM
_. 89
1iw
Lombardy poplars
+c,. .,; ,.
., G30_�16,7,8,;s,
.. >:o. � a ,`•: `�x� i .'.a::.
w
N,, ..
'. 'ti'
43
sh ;.hP
�%i
.:
�'„q:-'
,z:;: ;4
� ..::5%S .� a
. :_gin 11
ni. .�'.*G rA,..
Remove tree
Sauth'end, west of trail
90
Lombardy poplar
20
(D 1,2,6,7
4
3
4
11
Remove tree
South end, west of trail
.91
Lombardy`. poplar,
; 28
'�- ;... ,. k ti 2,4,6,8 .
...
4
3
. •4
., ,-1.1
Remove tree
South end, west of trail
92
Lombardy poplar
30
g 1,2,6,7,8
4
3
4
11
Remove tree
South end, west of trail
'93
Lorbardy.poplar
'::32
--IT,, 2,46,7,8,.4 :
,.„%4
3
4
;tY11
Remove tree
South end, west of trail
94
Lombardy poplar
12
2 oY 14 2,6,7,8
4
2
4
10
Remove tree
South end, west of trail
95
Lombardy>popiar ,
Y =. 18
,, o /o ...1;2 6,7,8
-a.
a. 4
:2
':
: 4
: n, .10
Remove tree
South end; west of trail;
96
Lombardy poplar
14
tt 2,8
4
3
4
11
Remove tree
South end, west of trail
. 97
Lorribardpoplar,
x r.16
,. <;' ....a • r 1;26,7,8
`,,
, , x
4
.,: ,
2
.`
4
10
Remove tree
South end, west of trail
98
Lombardy poplar
24
(, er 7 2,4,6,8
4
3
4
11
Remove tree
South end, west of trail
-99
Lombardy poplar ;:
- 20
,(p-;<1,2,3 4,6,8 x
}.
_
a •M;w = .
4
, ,
n
3
....`
:
_ 4
d,. '; r:: 11
Remove,tree
South end, "west of trail
100
Lombardy poplar
18
q or- (p 2,4,6,8
4
2
4
10
Remove tree
South end, west of trail
101
Lornbard o Iar _'
.1, • 24
..ari- M.2,3 46 8 n ,
4
r 10
Remove tree
South end, west of trail
102
Lombardy poplar
28
' 1,2,6,8
4
3
4
11
Remove tree
South end, west of trail
�:103
Lombardypoplar ,-
. 28
fe -; 1,2,3 4,6,8;:;
<,
. a
t..
<'4
„
,.3
<;.
n
- 4
11
Remove tree'....-.: ,:
South end; west of trail
105
Lombardy poplar
14
6f 2,6,7,8
4
3
4
11
Remove tree
South end, west of trail
4106
Lombardy=.poplar;:'-
., ';-30
g .:r3 n.` 2,6,7,8. , ..-
-
a .
4
4
3
4
;=:11
Remove tree; v-,
South end, west Of -trail; .
107
Lombardy poplar
32
g' 1,2,6,8,
4
3
4
11
Remove tree
South end, west of trail
PLANTING PLAN DETIAL (PHASE I) 11-14 POPLAR
RE -PLANTING PLAN
Tree Diameter (Poplar's removed)
(multiplication factor)
(8-12'd) = 4 (4x2) = 8
(12-18') = 20 (20x4) = 80
(18-24') = 7 (22x6) = 132
(> 24) = 13 (61x8) = 488
_ Replacement count! 708 tree's
Total Counts 708 EA
PLANTING DETAIL
Red Currant (Ribes vevit1
Sanguineum i wo(-V-
Pacific Ninebark -- W1Gcy vio'l do .tAi /1 V`Z&SS i-
Serviceberry and Lacs ivYtzfkpy7
Vine Maple JJ
5 gallon, planted 4'
on center In 2=3'
mulch (60EA,240T),
Pinus Contorts
'Shore Pine' 6-8'
b&b, planted 9' on
center<SOEA)
750EA Pacific/
Scouler's Willow
plugs in shoreline
area's of removed
tree's (stump's to
be above grade to
avoid soli
disturbance) Plugs
will be mulched and
maintained for
weed's until mature,
��-- '(2k 11
a fee Avi- ' >ti / D l 1-V S creS
-, �,{ r'`Y) 1,1t ram
0 � (k44 S' - (0-SCV- 475- - k'f D c,(9,V
56w�e yro3
6444
RECEIVED
FEB 0 9 20111
COMMUNITY
DEVELOPMENT
lowitrierris
rcu�
,ANY
February 3, 2011
Mr. Darrel DeNune
Boeing Corporation
cttG°°)
0$441113
Re: Duwamish Towers Phase 2 Poplar Trees
da c ey. com
DAVEY.
Proven Solutions fora GrowingWorld
Dear Darrel,
The Davey Tree Expert Company is pleased to submit the following arborist report for the Phase 2 Poplar trees. Please refer to the
attached site photo which indicates the Phase 2 tree locations.
As with the Phase 1 trees, we have had to repeatedly prune these trees over the years to remove dead branches/tops in an effort to
abate failure potential. The continuing widespread failure of branches causes me to again recommend more drastic measures to
safeguard Boeing employees, trail users and property. As it was with the Phase 1 trees the age class of these poplars is mature to
over-mature/senescent. This age class exacerbates the already inherent failure patterns of the species which, according to the
Evaluation of Hazard Trees in Urban Areas by Nelda Matheny and James Clark includes: trunk failure in high winds, often
associated with Hypoxylon cankers, which was the cause of the large tree failure onto the truck. Root failure due to susceptibility to
Armillaria root rot. And branch failure due to poor taper and/or crown dieback, which was the cause of the failure that destroyed the
seating bench adjacent to the trail.
The amount and extensiveness of the branch failures continues to be severe and it is again fortunate nobody has been injured.
Attached please find the Tree Risk Assessment Form which, for each tree details the defects, assigns a Risk Rating and provides a
treatment recommendation. You will see the treatment recommendation is to removal all 107 trees in the Phase 2 areas. Even
though some of the smaller, suppressed trees may not pose as serious a threat as the majority large trees, I felt that it would be wise
to remove them to allow a much better long term plan for replacement plantings.
Arborist Disclosure Statement
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 risk of living near trees. Clients may choose to accept or disregard
the recommendations of the arborist or, to seek additional advice.
The Davey Tree Expert Company is pleased to be of assistance with the tree care concerns of the Boeing Corporation. Should you
have any questions or require further clarification, please contact my office.
Sincerely,
The Davey Tree Expert Company
Rick Castro, District Manager
ISA Certified Arborist # PN-0179A
PNW-ISA Certified Tree Risk Assessor # 597
Attachments: Tree Risk Assessment Form and Threshold Tables
Sample defects photos
The Davey Tree Expert Company • P.O. Box 50393 • Bellevue, Washington 98015 • 425.462.8829
Phase 2
FON`.
SOUTH ,
/ 7
REST
Plant (back
side of
existing Plant
beds);
Plant 290
native tree's/
shrubs per
specification