UFR2020-00002 APPROVED
UFR2O2O - 00002
BROOKSIDE
SUBDIVISION
NOTICE OF TYPE I DECISION
URBAN FORESTRY REVIEW UFR2020-00002 III "
MODIFICATION OF URBAN FORESTRY PLAN FOR
BROOKSIDE SUBDIVISION TIGARD
120 DAYS = September 11, 2020
SECTION I. APPLICATION SUMMARY
FILE NAME: Brookside
CASE NO.: Urban Forestry Review(UFR) UFR2020-00002
PROPOSAL: The applicant proposes to modify the Urban Forestry Plan approved under the
Brookside Subdivision (Case No. SUB2018-00006). Specifically, the applicant
proposes to change the quantity, location, and species of trees to be planted. The
proposed canopy is less than what was previously approved for the overall site.
APPLICANT/ Ronald Layton
OWNER: 15630 SW 79th Avenue
Tigard, OR 97224
Brooks Family Trust
Mr. Walter Brooks
15540 SW 79th Avenue
Tigard, OR 97224
LOCATIONS: 15540 and 15570 SW 79th Avenue;WCTM 2S112CA Tax Lot 03700 and 03800
BASE ZONE: R-12: Medium-Density Residential
APPLICABLE
REVIEW
CRITERIA: Community Development Code (CDC) Chapter 18.420.060.F
SECTION II. DECISION
Notice is hereby given that the City of Tigard Community Development Director's designee has
APPROVED the above request.The findings and conclusions on which the decision is based are noted in
Section IV.
UFR2020-00002 Brookside—Urban Forestry Plan Modification 1
SECTION III. BACKGROUND INFORMATION
Site Information:
The Brookside Subdivision (Case No. SUB2018-00006) was approved by the City of Tigard on January
9,2018.This approval was for a 19-lot subdivision,located on the east side of SW 79th Avenue, south of
SW Ashford Street and north of SW Bond Street. The properties are zoned R-12 (Medium-Density
Residential).
SECTION IV. APPLICABLE REVIEW CRITERIA AND FINDINGS
F. Urban forestry plan modification. Except as exempted in Paragraph 18.420.060.F.1, an
application to modify the urban forestry plan component of a land use approval is processed
through a Type I procedure, as provided in Section 18.710.050, using the approval criteria in
Paragraph 18.420.060.F.2.
The applicant proposes to modify the Urban Forestry Plan approved under the Brookside Subdivision
application (Case No. SUB2018-00006).The previously approved Urban Forestry Plan specified 70
street trees to be planted along the project's frontage. The street trees include 35 Paperback Maples, 23
Japanese Stewartia, and 14 Japanese Snowbell. In addition,two Paperback Maples were proposed on
Lots 7 and 8. During the site improvement phase of construction, the applicant contracted another
arborist to reevaluate the number of street trees that were originally approved. Morgan Holen;Morgan
Holen&Associates,LLC, a certified arborist and tree risk assessor,provided a written report that due
to the locations of driveways and utilities the site would not allow for planting of 70 street trees.
The proposal is to plant 38 street trees that result in less canopy than was originally approved,but still
meet the minimum effective canopy requirements.
18.420.060.F
2. Approval criteria. The approval authority will approve or approve with conditions the
modification to the urban forestry plan component of a land use approval when all of the
following are met:
a. The project arborist or landscape architect has provided a report and statement
certifying that the previously approved urban forestry plan did not account for the
circumstances that led to the proposed modification;
The project arborist has provided a revised report and statement certifying that the previously approved
Urban Forestry Plan did not account for the circumstances that led to the proposed modification. The
previous plan did not account for locations of driveways and utilities as well as proposed trees in
locations that the trees would not thrive in due to inadequate sunlight.The modified Tree Canopy Site
Plan depicts the locations of the proposed street trees. The proposed plan meets the minimum
effective tree canopy cover for the overall development site.This criterion is met
b. The project arborist or landscape architect has provided a report and statement
certifying that there is no practicable alternative to the proposed modification; and
The project arborist has provided a revised report and statement certifying that there is no practicable
alternative to the proposed modification.This criterion is met.
c. The project arborist or landscape architect demonstrates compliance with Subsection
18.420.060.B through a modified urban forestry plan.
UF122020-00002 Brookside—Urban Forestry Plan Modification 2
The project arborist submitted a revised Urban Forestry Plan and supplemental report that
demonstrates compliance with CDC 18.420.060.B,including tree preservation,protection,and canopy
standards.The Modified Effective Tree Canopy Cover Summary demonstrates that the canopy cover
for the total development is met at 33.2 percent.This criterion is met.
CONCLUSION: As demonstrated in the analysis above, the proposed modification to the Urban
Forestry Plan Component of the approved Brookside Subdivision meets all
applicable approval criteria.
CONDITIONs:
1. The applicant must provide a fee to cover the city's cost of collecting and processing the
inventory data for the entire urban forestry plan.The fee is based on 38 planted trees.
2. The applicant must provide a tree establishment bond that meets the requirements of the
Urban Forestry Manual,Section 11,Part 2.This bond amount will be for 38 newly planted
open grown trees.
SECTION V. PROCEDURE AND APPEAL INFORMATION
Notice:
Notice was provided to:
X The applicant and owner
Final Decision:
A Modification to the Urban Forestry Plan Component of a Land Use Approval is a Type I Procedure.
As such, this decision is final for purposes of appeal on the date it is mailed or otherwise provided to the
applicant, whichever occurs first. This decision is not appealable locally, and is the final decision of the
City.
711.11.1
THIS DECISION IS FINAL ON MAY 19, 2020,
AND BECOMES EFFECTIVE ON MAY 20, 2020.
Questions:
If you have any questions,please contact Agnes Lindor at (503) 718-2429 or AgnesLntigard-or.gov.
May 19, 2020
APPROVED BY: `�gnes Lindor
Associate Planner
UFR2020-00002 Brookside—Urban Forestry Plan Modification 3
ATTACHMENT D: MODIFIED TREE CANOPY SITE PLAN PLANTING LEGEND
•SPECIES OPTIONS FOR TREES 1-12,SMALL STATURED,15'O.C..QUANTITY 12
-payerbark maple(Acer gnaeuml
-Eastern redbud(Cards canadensis)
-Kouea dogwood(Corms kpusa)
•Merrill magnolia(Magnolia x Ioebneri Merrill)
•SPECIES OPTIONS FOR TREES 13-27 AND 29-38,MEDIUM STATURE)),20'O G.,QUANTITY 25:
-Hedge maple(Acor eampesbe)
-Raywood ash(Fraunus oxycarpa'Raywood'I
-Yulan magnolia(Magnolia denudate)
-Frontier elm(Ulmus'Frontier')
i I I / •SPECIES OPTIONS FOR TREE 28,MEDIUM STATURED,BETWEEN LOTS 10-11,QUANTITY 1: -
-hackbeny(Cells occidenmlis)
I -honeylocust(GleGala tnacenems Vol.Inermrol
• i
I 3 ,
I I / • GENERAL NOTES:
__ _ �___—__. _._ o1 • - -- -- - '-I-^^ - -- ---r---�-P-r-.--. 1.STREET TREES MUST HAVE A MINIMUM CALIPER OF 1.5 INCHES AT THE TIME OF PLANTING.
® 7 ? 14 I 15 2.ROOT BARRIERS MUST BE INSTALLED ACCORDING TO THE MANUFACTURER'S SPECIFICATIONS WHEN A STREET TREE
( 18 19 IS PLANTED WITHIN 5 FEET OF ANY HARD SURFACE PAVING OR UTILITY BOX,OR AS OTHERWISE REQUIRED BY THE CITY
I l,l ENGINEER.
a ICI a SILT RIIW6 __ __f 3.WHERE AVAILABLE SOIL VOLUME IN LANDSCAPE STRIPS IS LESS THAN 500 CUBIC FEET.STREET TREES ARE SPECIFIED
I± CCFIIS IN FRONT YARDS;THESE TREES MUST BE PLANTED WITHIN 6-FEET OF THE RIGHT OF WAY TO QUALIFY AS REQUIRED
�-�,• .a STREET TREES.
J 16 --- -- 4.STREET TREES MUST SE PROVIDED ADEQUATE SPACING FROM NEW AND EXISTING TREES ACCORDING TO THE
1 13 �, m 16 FOLLOWING STANDARDS WHEREVER POSSIBLE:
I •., 1( I a.STREET TREES CATEGORIZED AS SMALL STATURE MUST BE SPACED NO GREATER THAN 20 FEET ON CENTER
AND NOT CLOSER THAN 15 FEET ON CENTER FROM OTHER NEWLY PLANTED STREET TREES OR ANY EXISTING
I TREE THAT HAS BEEN IN THE GROUND FOR OVER THREE YEARS;AND,
3
ISTATUREMUST SPACEDNOGREATER THAN 30 FEET ON CENTER
B.STREETTREES CATEGORIZED AS MEDIUM ENEWLY
^ PLANTED STREET TREES OR ANY EXISTING
l�� « �I � g M M AND NOT CLOSER THAN 20 FEET ON CENTER FROM OTHER
W I` r- - TREE THATMUST
BEEN IN THECGRORDINGUND T OVER HE FOLLOHREE WING
STANDARDS.
{IFP[L�'1 12 17 SCAIF.I•=30 5.9REETTREET TREES CATEGORIZED
DACCAS ACCORDING STATURE
BEPLANTE
/ p CLOSER
STREET THAN
TREEET FROM S HARD
RD SURFACE PAVING;
MAY NOT BE PLANTED WITH THE CENTER OF THEIR TRUNKS
,I/ •, o b.TRUNEET TREES CATEGORIZED AS MEDIUM FARDSUSTATURE I MAY NOT BE PLANTED WITH THE CENTER OF THEIR
KS CLOSER THAN 2.5 FEET FROM ANY
n+a f 4 ��U � •• RFACE PAVING;
c.N T CLOSER THAN 4 FEET ON CENTER FROM ANY FIFIREHYDRANT.UTILITY BOX,OR UTILITY POLE,
• _ _, : d NOT CLOSER THAN 2 FEET ON CENTER FROM ANY UNDERGROUND UTILITY'
c r 'I�•: - ,-- '( )- ' e.NOT CLOSER THAN 10 FEET ON CENTER FROM ASTREET LIGHT;
17
f.NOT CLOSER THAN 20 FEET FROM A STREET RIGHT OF WAY CORNER
UM
OR
-- N I ¢'1�t •414 `asr� 4 e , �� • B.IRRIGATONT AT FULL
MATURITY,
URUIED ILLNO3 CAERFERE WITH
LINES.RIGRTIIONSIS DETERMINED
SLOW-RELEASE
ER
��— _ WHICH,
WHEREITIHERE ARE OVERHEAD UTILITY LINES,THE STREET TREES
BE
NO
III �a h� WATERING BAGS SHALL BE INSTALLED
WRH THE LINES.
16 -�-_ LLED AND LANDSCAPE
EINEO DURING SUMMER MONTHS FOR AT LEAST ONE GROWING
A� V� '7 it 1rr...B I� iP1 [�S� I );
I I RC, iln$r l` ✓. TREE PLANTING SPECIFICATIONS FROM PREVIOUSLY APPROVED URBAN FORESTRY PLAN:
I • F - -NEW TREES THAT ARE PLANTED TO MEET THE EFFECTIVE CANOPY REQUIREMENTS SHALL CONFORM TO THE
• � � ,
i ',r __ _ \ APPLICABLE STANDARDS IN THE CITY OF TIGARD URBAN FORESTRY MANUAL.THEY SHALL BE PLANTED IN ACCORDANCE
' WITH THE AMERICAN NATIONAL STANDARDS INSTITUTE(ANSI)STANDARDS FOR TREE PLANTING(A300,PART(BAND
a ADDITIONAL STANDARDS ADOPTED BY THE OREGON LANDSCAPE CONTRACTORS BOARDN)FOR.NURSERY STOCK
II 2 ' y SHALL MEET THE REQUIREMENTS OF THE STAKE
ASSOCIATION OF NURSERYMENFYMEN(MN)FOR NURSERY STOCK(ANSI
I, I r� I •,1. (r 260.1)FOR GRADE NO.1 OR BETTER.DOUBLE STAKE TREES ONLY IF NEEDED FOR STABILITY.
m pP
I' 11 e 5 -THE SITE SOILS CONSIST OF NATIVE AND DISTURBED URBAN SOILS THAT SUPPORT EXISTING TREES.THE EXISTING
i 11
. 1 - ' '� TREES APPEAR TO BE HEALTHY AND SUSTAINABLE.AND NO SOIL AMENDMENTS APPEAR TO BE NECESSARY AT THIS
',i 10 9 I ^'r I / TIME.
I 1 -IFD TO CO LOOSEN OOSEN SOILOCCURS OIL. EMOVE A PLAYINGER S OF GOOD OD TOPSOIL G
D TEMPOOPMLNSRARILY TOCKPIOE TURNINGLE. PSPREAD
4-INCHESULD BE
LIGNIN)
(EXPANDED SHALE/CALCINE CLAY)
MENT OVER THE AREA PRIOR
3d I -- -- - _ __ _ l�__ % �Ila I ANDTUR0 OF ANNETHE EHL.MCKMAIING COMPOST SAFE D 9HOE TO TURN SOIL TNCE EE OF
BREPOEAK SE)
FRIL OM PAVING,
EPDECS ALK SIDEWALKS,STRUCTURES,
I •, 1, 4 L AT THE EDGE OF THE PAVING(ANGLE OF
1' . ELY
I 1 m r _. REPOSE)SO AS NOT TO UNDERMINE THE PAVING SUB-BASE.HAND TURNING MAY BE NECESSARY ALONG THE EDGES
4'1 =e '',-1r a' WATER C T - —~M_ ;I'j •
SPRgDD TOPSOIVING AND AT WALLS.
ANNINCORPORATE THE D ADD
IXTUNIC ES OF SUITABLE YARD
TLL TO A RD FlASGEORGAH GREATER NIC AMENDMIL AMENDMENT.MAINTAIN A SLOPE OF COMPACTED THE EaNTOOVEROTHE SU FACE AND AFTER LIGHTG. LY TILL
OF
TO
AK THE
0 1
I I III r)
u
I SLT HNoc i 3I \\, '';
g 1, a \;, \I
'`° 00a 15630 SW 79th 7 �� 0�'
a
--�- ,
w I�
x I T I 1 I,Morgan Holen.attest Mat Nis Modified Tree Canopy Sib Plan meets the
IM I I + _ 4 T requirements in Section 10,part 2,of Sr City of Tigard Urban Forestry Manual.
t 1 MM.1 13 --5 1
I �I , I >W �� — —� r� YY� f
J I PVIA m „� 1\
erw __ ern__ I___3 9 1 , 1`m Morgan Holen
•
I O WI I7 IS4 Boartl Cartigatl Mastro ANwisI PN-61JSB
IBA Tree Risk Aseeeamem Queliled
i i 2 11I A Dale:April 19,2020
�� O I �I -- 1„ ^'Fir.
-- ,
gT ��
SW FESOAURT I I CITY OF TIGARD,JJ f I Approved by Planning
---�-- `\ i . • nu-�—am� `I,n Date: ��I 1�
ISTORM WATER TRACTD
1 B '
Initials: A`"
i
I
2016-181
DESIGNED:
a°g _1_— J I •Ii 11 C Ron Layton BROOKSIDE
DRAVY I =3D _ _ 15630 SW 79th Avenue 15570 SW 79th Avenue 16
SCALE: ENGINEERING SURVEYING PLANNING Tigard,Oregon Tigard,Oregon
DATE: February,2019 4/10R020 1 MODIFIED TREE CANOPY SITE PLAN PO Sox 1345 503/48141822
FILE: SW 791b Cil611 DATE NO. REVISION Lake Oswego.Oregon 9206 email:thmeengrgoomcsm_nel
Attachment B:Planted Tree Inventory
Morgan Nolen MHA20018 Brookside-Urban Forestry Plan Modification 04-19-2020.xlsx
-& AL/OCIATE,P, Page 1 of 1
Mature Mature Available
Tree Canopy Canopy Area Soil Volume
No. Common Name(Scientific Name) Size Spread(ft.) (sq.ft.) (cu.ft.) Comments
1 1.5" 25 491 500+ Street Tree
2 1.5" 25 491 500+ Street Tree
3 1.5" 25 491 500+ Street Tree
4 1.5" 25 491 500+ Street Tree
5 paperbark maple(Acer griseum)OR 1.5" 25 491 500+ Street Tree
6 Eastern redbud(Cercis canadensis)OR 1.5" 25 491 500+ Street Tree
Kousa dogwood(Corpus kousa)OR
7 1.5" 25 491 500+ Street Tree
Merrill magnolia(Magnolia x loebneri 'Merrill)
8 1.5" 25 491 500+ Street Tree
or a combination of these small statured species
9 1.5" 25 491 500+ Street Tree
10 1.5" 25 491 500+ Street Tree
11 1.5" 25 491 500+ Street Tree
12 1.5" 25 491 500+ Street Tree
13 1.5" 30 707 500+ Street Tree
14 1.5" 30 707 500+ Street Tree
15 1.5" 30 707 500+ Street Tree
16 1.5" 30 707 500+ Street Tree
17 1.5" 30 707 500+ Street Tree
18 1.5" 30 707 500+ Street Tree
19 1.5" 30 707 500+ Street Tree
20 1.5" 30 707 500+ Street Tree
21 1.5" 30 707 500+ Street Tree
22 1.5" 30 707 500+ Street Tree
Hedge maple(Acer campestre)OR
23 1.5" 30 707 500+ Street Tree
24 Raywood ash(Fraxinus oxycarpa 'Raywood') OR 1.5" 30 707 500+ Street Tree
Yulan magnolia(Magnolia denudata)OR
25 1.5" 30 707 500+ Street Tree
Frontier elm((Emus 'Frontier')
26 1.5" 30 707 500+ Street Tree
or a combination of these medium statured species
27 1.5" 30 707 500+ Street Tree
29 1.5" 30 707 500+ Street Tree
30 1.5" 30 707 500+ Street Tree
31 1.5" 30 707 500+ Street Tree
32 1.5" 30 707 500+ Street Tree
33 1.5" 30 707 500+ Street Tree
34 1.5" 30 707 500+ Street Tree
35 1.5" 30 707 500+ Street Tree
36 1.5" 30 707 500+ Street Tree
37 1.5" 30 707 500+ Street Tree
38 1.5" 30 707 500+ Street Tree
hackberry(Celtis occidentalis)OR
28 honeylocust (Gledistia triacanthos var.inermis) 1.5" 35 963 500+ Street Tree
Total Canopy Area 24,530
The street frontage at the subject site(including the tracts)is approximately 1,494.08 lineal feet.Therefore,38 street trees are
required.
Morgan Nolen 8 Associates, LLC
Consulting Arborists and Urban Forest Management
3 Monroe Parkway,Suite P220,Lake Oswego,OR 97035
morgan@mholen.com 1971.409.9354
Attachment C: Effective Tree Canopy Cover Summary
Holen I Olen MHA20018 Brookside-Urban Forestry Plan Modification 04-19-2020.xlsx
—s--
OCIAT Page 1 of 1
�f � 'tr
2x Canopy Area(sq.ft.) 2x Canopy Area(sq.ft.) 1.25 x Mature Mature Canopy 1.25x Mature Effective%
of Preserved Trees of Preserved Stands Canopy Area Area (sq.ft.)of Canopy Area Canopy
Lot Area (w/condition and (w/condition and (sq. ft.)of Native Non-Native (sq.ft.) of Tree Canopy (Canopy Area
Lot No. (sq.ft.) preservation rating>2) preservation rating>2) Planted Trees Planted Trees Planted Stands Area (sq.ft.) /Lot Area)
Overall Site 73,824 0 0 0 24,530 0 24,530 33.2%
Notes:Effective tree canopy cover is required to be calculated on a lot/tract by lot/tract basis only in the R-1,R-2,R-3.5,R-4.5 and R-7 districts.
The standard percentage of effective tree canopy cover for each lot or tract in the R-1,R-2,R-3.5,R-4.5 and R-7 districts shall be at least 15 percent.
The standard percentage of effective tree canopy cover for the overall development site shall be at least:
i.40%for R-1,R-2,R-3.5,R-4.5 and R-7 districts,except for schools(18.130.050(J));
ii.33%for R-12 R-25,R-40,C-N,C-C,C-G,C-P,MUE,MUE-1,MUE-2,MUC,MUR and I-P districts,except for schools(18.130.050(J));and
iii.25%for MU-CBD,MUC-1,I-L and I-H districts,and for schools(18.130.050(J))in all districts.
Morgan Molen &Associates, LLC
Consulting Arborists and Urban Forest Management
3 Monroe Parkway,Suite P220, Lake Oswego,OR 97035
morgan@mholen.com 1971.409.9354
ATTACHMENT A: PRELIMINARY PLAT MARK-UP
Identifies Lots/Tracts used to Identifies Street Segments Used to Calculate
92calculate the size of the Overall Site I 1,1' 2000 sz.17N 1 45.00' 50.00' ��
the Total Lineal Street Frontage Abutting the Site
15
Lot/Tract Size(sq.ft.) m sp. U 3,3635.F. 19 Segment Lengths(ft.)
1 3,532 I 92.45' ¢ _____ 92.16'__ 4,5078S.F.
5,159 S.F. 36.42
2 3,162 i 13 ~ PHASE II eI I 8 36.46
1.3 3,146 3,376 S.F. 4 m gd ma's "'
`* * C .- "' 3.361 S.F.
' 29$$
4 3,355 = �^ I 23.68
92.74' LL 92.10
5 3,655 - ----- -- .- I I 77.97
6 3,390 12 17 �a SCALE 20
' 4.1305.F. $ g 4,137 S.F. �' 43
7 3,761 I <I :- 80.32
8 4,730 ?"'` 77.97. zo.ar 80,3z �23� 12.39
9 3,550 - 8.64
I 10 3,360 .___ - NEBSSIYE 30k.W�-----------__--- 43.03
11 3,518 1 sc 66.99
12 4,130 I 21
13 3,376 rg I 61.12
14 3,364 rp 1.73' 44.21' 46.71' 46.68' 40.1r ! 23.44
15 3,363 fir.r 10 I I 5 31.73
16 3,361 3,1 a S.F. 3.360 S.F. I 8 6 o t 44.21
'. - ,, 3,390 S.F. 2
17 4,137 s $' STORM
46.71
3,550 S.F.S.f ,6,
18 4,507 i ! I` 0 I �E" r " 46.68
19 5,159 i I 7150' 65.41' __
1U'R/W DEDI'd110N I � _ 72.91' 40.17
WQTract 2,818 j 47.21' I 4.4.21' I a6.71 aese' f:: 4 =. 39.43
WQTract 450 I a of 3,355S.F. 4
13a.zr a IIr 42.D 32 8
OVERALL SITE 73,824 WATER QUALITY 2.818S.F.ry m
61 ' _ 39
- � 7
7.5D' 65.66' 40.05
2
73
7 m 3 0
3,761 S.F. Io 3;1469.F.'', 3.78
Im
3 Im 15630 SW 79th I 25.ar 7252 °.0 I 6575
P 97.52• a. ,g
" I I ~ $ TRACT 2,3048.E 34
I 25.00.. .' 97.55' F
I --- , -- 25.ar 7255' Y, e'm I= 35
a 15
- 8 8 2 a 117.91
_ ,a 4,730 S.F. IQ 3,162 S.F. ,$
15'STORM ' I" 117.92
EASEMENT ' 7961_ 36•
. 4.03
IW I� �j- $ 97.52
-- SW KELSO COURT 16 I 'g 1 m I 22
3.532 S.F.
1= I 1 s.r.: ! 97.55
45D S.F.;8 �Ij
- usoo ,9.a J 0.ar� s 1561 asss'1 _3o�oc 9.19
' ‘\ �°'°p" J
1 1494.08 TOTAL STREET FRONTAGE
, EASEMENT
WQ TRACT !
i
I
PRELIMINARY PLAT
2016-181
° WNED BOG
°s - -"�-1. - c ,, , C Ron Layton BROOKSIDE SKEET'
DRASCALE: 1--30' 15630 SW 79th Avenue 15570 SW 79th Avenue 1/6 '
ENGINEERING SURVEYING PLANNING Tigard,Oregon
DATE: December.2017 Poeorl3as sal;eataB3z Tigard,Oregon
FILE: SW 79th Prelimll DATE NO. REVISION take Oswego,Oregon 91033 email:Netaer,Upcemget.net
971.409.9354
Morgan Nolen 3 Monroe Parkway,Suite P 220
Lake Oswego,Oregon 97035
fr—-Alf CCIATLJ- - Consulting Arborists and Urban Forest Management morgan@mholen.com
DATE: April 19, 2020
TO: Ron Layton, Bayshore Design
FROM: Morgan Holen, Consulting Arborist
RE: Brookside Subdivision—Urban Forestry Plan Modification
MHA20018
Morgan Holen &Associates was contacted by Ron Layton of Bayshore Design regarding the previously
approved Urban Forestry Plan (UFP)for the Brookside Subdivision project located in the R-12 zoning
district in Tigard,Oregon. Mr. Layton asked me to review the Tree Canopy Site Plan because the
proposed planting plan seemed excessive and not feasible considering the City's various spacing
requirements. Upon my request, Mr. Layton provided the previously approved UFP in its entirety along
with the 2019 plan set and preliminary plat for my review and use. I have not visited the site.This report
proposes a modification of the quantity, location and species of trees to be planted in the Tree Canopy
Site Plan. No modifications to the previously approved Tree Preservation and Removal Site Plan are
proposed and no payment of a tree canopy fee in lieu of planting is required.
A minimum of 33%effective tree canopy cover is required in the R-12 zoning district.The previously
approved UFP noted that the overall development site was 73,834 square feet in size with 1,600 lineal
feet of street frontage abutting the site. Based on the street frontage,40 street trees were required, but
70 trees were proposed to be planted.These 70 trees provided 35,352 square feet of effective tree
canopy cover,or 48%of the overall development site. Thus,the canopy requirement was satisfied.The
previously approved UFP did include a caveat in regard to the proposed planting locations: "Note that
the final street tree locations will need to be adjusted as needed to avoid the final driveway locations
while ensuring adequate soil volumes, infrastructure setbacks,and other planting requirements."
In reviewing the plan set, it was obvious that the locations of driveways and utilities would not allow for
70 trees to be planted. Furthermore,the proposed trees were generally spaced too densely and not
suitable along alleyway tracts and the eastern property boundary where sunlight is expected to be
inadequate.
Attachment A provides a mark-up of the preliminary plat as documentation of the size of the overall
development site and total lineal length of street frontage that I used as the basis for modifying the
Effective Tree Canopy Cover Summary.The overall development site is 73,824 square feet and the lineal
length of street frontage abutting the project site is 1,494.08. Based on the actual street frontage, 38
street trees are required.
Attachment B provides the modified Planted Tree Inventory.The minimum required quantity of street
trees is now proposed, including: 12 small statured trees providing 491 square feet of effective tree
canopy cover each; 25 medium statured trees providing 707 square feet of effective tree canopy cover
each;and, one other medium statured tree providing 963 square feet of effective tree canopy cover.
Several suitable species options providing equivalent canopy cover are listed in order to provide the
landscape contractor with flexibility at the time of planting, depending on what is readily available at the
nursery.
Attachment C provides the modified Effective Tree Canopy Cover Summary.The 38 trees now proposed
to be planted provide a total of 24,530 square feet of effective tree canopy cover, or 33.2%of the
overall development site.The minimum required canopy cover continues to be satisfied.
Brookside Subdivision—Urban Forestry Plan Modification
April 19, 2020
Page 2 of 2
Attachment D provides the modified Tree Canopy Site Plan, showing the proposed tree locations by
species and including tree planting specifications in accordance with Sections 2 and 10 of the Tigard
Urban Forestry Manual.
The approval criteria for modifications to the Urban Forestry Plan components of an approved land use
permit are addressed below.
a. The project arborist or landscape architect has provided a report and statement certifying that
the previously approved urban forestry plan did not account for the circumstances that lead
to the proposed modification;
The previously approved UFP did not account for the circumstances that led to the proposed
modification because it assumed that the locations of driveways and utilities would accommodate the
proposed plantings.The plan also unduly planted the site and trees would not have thrived in the
alleyways or along the eastern boundary where sunlight is expected to be inadequate.
b. The project arborist or landscape architect has provided a report and statement certifying that
there is no practicable alternative to the proposed modification;and
There is no practicable alternative to the proposed modification because the site cannot accommodate
70 trees. Finding locations for the 38 required street trees was challenging enough considering all the
various spacing requirements. Where soil volume is inadequate in planting strips, street trees are
specified within 6-feet of public rights of way.The proposed trees provide the closest and best spacing
possible and species were selected based on suitability for their proposed locations while also achieving
the minimum 33%canopy cover requirement.
c. The project arborist or landscape architect demonstrates compliance with the Urban Forestry
Plan Requirements through a modified urban forestry plan.
This memorandum and the enclosed attachments demonstrate that the proposed modification is in
compliance with the City's Urban Forestry Plan requirements.
The client may choose to accept or disregard the recommendations contained herein, or seek additional
advice. Neither this author nor Morgan Holen &Associates have assumed any responsibility for liability
associated with the trees on or adjacent to this site. Please contact us if you have questions or need any
additional information or further assistance.
Thank you,
Morgan Holen &Associates, LLC
Morgan E. Holen, Member
ISA Board Certified Master Arborist, PN-6145B
ISA Tree Risk Assessment Qualified
Forest Biologist
Enclosures: Attachment A—Preliminary Plat Mark-up
Attachment B—Modified Planted Tree Inventory
Attachment C—Modified Effective Tree Canopy Cover Summary
Attachment D—Modified Tree Canopy Site Plan
RECEIVED
MAY 11 2020 Case #: URF2020-00002
City of Tigard 3
9 1 " COMMUNITY DEVELOPMENTpT� HD
a EER ING
TIGARD Master Land Use Application
_ .
LAND USE APPLICATION TYPE
❑ Accessory Dwelling Unit(ADU) 0 Modification: O Type I yType II
O Adjustment ❑ Planned Development:
O Annexation ❑ Consolidated Plan
O Comprehensive Plan Map Amendment O Concept Plan
O Conditional Use ❑ Detailed Plan
❑ Downtown Development Review: 0 Sensitive Lands Review:
0 Type I ❑Type II 0 Type I O Type II O Type III
O Adjustment O Site Development Review: 0 Type I O Type II
❑ Home Occupation—Type II 0 Subdivision
O Land Partition 0 Temporary Use Permit
O Lot Line Adjustment/Lot Consolidation ) Urban Forestry Plan:
❑ Marijuana Facility Permit I )Modification O Discretionary Review
O Miscellaneous: 0 Zoning Map Amendment
❑ Type II O Type III
PROJECT INFORMATION
Project name: (7j?1.t72S/DE
Brief description of project: Modify urban forestry plan approved under SUB2018-00005
SITE INFORMATION
Location (address if available): 15S ?o j 5 t j 7 i Pi 1 (9R'n o, bit- 7 2-Z y
Tax map and tax lot number(s): 20 0� 2-CA- .. p 3 6O o
Site size: N Y j I'( Zone: t" -1 Z
APPLICANT INFORMATION
Name: 2. 11<7LIa () (Al T
Mailing address:15 ( 5 47`I City/State:17 4/ OA-
q � / Zip: �7��y
Phone: lOe7. `-)77 �i Z!� S Email: )0(Ph' PI 1 i3/ C ff17/?yc-c•0C..
Applicant's representative: 1312-Lk f 60 I )6 cm e)0C •
Phone: ¶0) /V/- ZZ Email: th z✓1 A aV1 f soconullYi Me f
City of Tigard • 13125 SW Hall Blvd. • Tigard,Oregon 97223 • www.tigard-orgov • 503-718-2421 • Page 1 of2
PROPERTY OWNER INFORMATION giIame as applicant
(Attach list for additional owners)
Name: gmot7. J
Mailing address: City/State: Zip:
Phone: Email:
SUBMITTAL REQUIREMENTS
In addition to this application form,you must submit all required items listed in Subsection 18.710.030.0 of
Tigard's Community Development Code. If you are unsure what is required with your application,please contact
the planner on duty at 503-718-2421 or tigardplanneronduty(7a,tigard-or.gov.
I certify that I am the property owner or I am eligible to initiate this application,as provided in the Tigard
Commu ' evelopment Code. e best of my knowledge,all the information provided within this application
pack is c mplete and ccurat
pplicant's si e'' Print name Date
i a�T 6r2cs 5-1‘r/7.,-)
Property owner's signature* Print name Date
Property owner's signature* Print name Date
*The owner must sign this application or submit a separate written authorization when the owner and applicant are
different people.
n STAFF USE ONLY
Case No.:UFIZ2�1�,e Z Application fee: +-SCE Received by: At- Date: 51(3 20
Related Case(s):9U13261 g'000O(Q Determined complete by: AL". Date: 5f 14 Iz
City of Tigard • 13125 SW Hall Blvd. • Tigard,Oregon 97223 • wwwtigard-or.gov • 503-718-2421 • Page 2 of 2