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TREE RETENTION/REMOVAL PLAN 1" = 10'-o..
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EXISTING TREE LEGEND
11 A, SIGNIFICANT TREE - IN ROW, TO BE REMOVED
SIGNIFICANT TREE - ON SITE TO REMAIN
SHOWN WITH DRIP LINE
4" SIGNIFICANT TREE ON SITE TO BE REMOVED
e-* NON SIGNIFICANT TREE ON SITE, TO BE REMOVED
Protection Measures During Construction: Protection measures in this subsection shall apply for all trees that are to be
retained on site and off site. Off -site trees containing drip lines that encroach onto the site under construction shall be
considered protected trees unless it is determined the abutting property owner is in compliance with subsection C of this
Section, Allowed Tree Removal Activities. All of the following tree protection measures shall apply:
a. Construction Storage Prohibited: The applicant may not fill, excavate, stack or store any equipment, dispose of any
materials, supplies or fluids, operate any equipment, install impervious surfaces, or compact the earth in any way within the
area defined by the drip line of any tree to be retained.
b. Fenced Protection Area Required: Prior to development activities, the applicant shall erect and maintain six-foot (6) high
chain link temporary construction fencing around the drip lines of all retained trees or at a distance surrounding the tree
equal to one and one -quarter feet (1-1/4') for every one inch (1") of trunk caliper, whichever is greater, or along the
perimeter of a tree protection tract. Placards shall be placed on fencing every fifty feet (50') indicating the words, "NO
TRESPASSING — Protected Trees," or on each side of the fencing if less than fifty feet (50'). Site access to individually
protected trees or groups of trees shall be fenced and signed. Individual trees shall be fenced on four (4) sides. In addition,
the applicant shall provide supervision whenever equipment or trucks are moving near trees.
c. Protection from Grade Changes: If the grade level adjoining to a tree to be retained is to be raised, the applicant shall
construct a dry rock wall or rock well around the tree. The diameter of this wall or well must be equal to the tree's drip line.
d. Impervious Surfaces Prohibited within the Drip Line: The applicant may not install impervious surface material within the
area defined by the drip line of any tree to be retained.
e. Restrictions on Grading within the Drip Lines of Retained Trees: The grade level around any tree to be retained may not
be lowered within the greater of the following areas: (i) the area defined by the drip line of the tree, or (ii) an area around
the tree equal to one and one-half feet (1-1/2') in diameter for each one inch (1") of tree caliper. A larger tree protection
zone based on tree size, species, soil, or other conditions may be required. (Ord. 5676, 12-3-2012)
f. Mulch Layer Required: All areas within the required fencing shall be covered completely and evenly with a minimum of
three inches (3") of bark mulch prior to installation of the protective fencing. Exceptions may be approved if the mulch will
adversely affect protected ground cover plants. (Ord. 5676, 12-3-2012)
g. Monitoring Required during Construction: The applicant shall retain a certified arborist or licensed landscape architect to
ensure trees are protected from development activities and/or to prune branches and roots, fertilize, and water as
appropriate for any trees and ground cover that are to be retained.
h. Alternative Protection: Alternative safeguards may be used if determined to provide equal or greater tree protection.
EXISTING TREE LEGEND
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DEPARTMENT OF COMMUNITY CITY OF
AND ECONOMIC DEVELOPMENT Renton '
TREE RETENTION WORKSHEET
Planning Division
1055 South Grady Way -Renton, WA 98057
Phone:425-430-7200 1 www.rentonwa.gov
1.
Total number of trees over 6" diameter', or alder or cottonwood
trees at least 8" in diameter on project site
12
trees
2.
Deductions: Certain trees are excluded from the retention calculation:
Trees that are dangerous2
trees
Trees in proposed public streets
trees
Trees in proposed private access easements/tracts
trees
Trees in critical areaS3 and buffers
trees
Total number of excluded trees:
0
trees
3.
Subtract line 2 from line 1:
12
trees
4.
Next, to determine the number of trees that must be retained 4, multiply
line 3 by:
0.3 in zones RC, R-1, R-4, R-6 or R-8
0.2 in all other residential zones
0.1 in all commercial and industrial zones
4
trees
5.
List the number of 6" in diameter, or alder or cottonwood trees
over 8" in diameter that you are proposing5 to retain 4:
4
trees
6.
Subtract line 5 from line 4 for trees to be replaced:
(if line 6 is zero or less, stop here. No replacement trees are required)
(0)
trees
7.
Multiply line 6 by 12" for number of required replacement inches:
inches
8.
Proposed size of trees to meet additional planting requirement:
(Minimum 2" caliper trees required for replacement, otherwise enter 0)
inches per tree
9.
Divide line 7 by line 8 for number of replacement trees6:
(If remainder is .5 or greater, round up to the next whole number)
0
trees
1 Measured at 4.5' above grade.
Z A tree certified, in a written report, as dead, terminally diseased, damaged, or otherwise dangerous to persons or property by a licensed
landscape architect, or certified arborist, and approved by the City.
3 Critical areas, such as wetlands, streams, floodplains and protected slopes, are defined in RMC 4-3-050.
4 Count only those trees to be retained outside of critical areas and buffers.
5 The City may require modification of the tree retention plan to ensure retention of the maximum number of trees per RMC 4-4-13OH7a.
6 When the required number of protected trees cannot be retained, replacement trees, with at least a two-inch (2") caliper or an evergreen at least
six feet (6') tall, shall be planted. See RMC 4-4-130.H.1.e.(ii) for prohibited types of replacement trees.
1
H:\CED\Data\Farms-Templates\Self-Help Handouts\Planning\Tree Retention Worksheet.docx 08/201E
NO REPLACEMENT TREES NECESSARY
Tree #
Species
Diameter of tree in inches
Significant on site tree
1
Lombardy poplar (Populus nigra italica)
46
0
2
Lombardy poplar (Populus nigra italica)
12
0
3
Black cottonwood (Populus trichocarpa)
20
1
4
Black cottonwood (Populus trichocarpa)
10
1
5
Western red cedar (Thuja plicata)
10
1
6
Douglas fir (Pseudostuga menziesii)
8
1
7
Douglas fir (Pseudostuga menziesii)
8
1
8
Douglas fir (Pseudostuga menziesii)
8
1
9
Western red cedar (Thuja plicata)
6
1
10
Black cottonwood (Populus trichocarpa)
6
0
11
Black cottonwood (Populus trichocarpa)
24
1
12
Black cottonwood (Populus trichocar a
30
1
13
Black cottonwood (Populus trichocarpa)
16
1
14
Black cottonwood (Populus trichocarpa)
26
1
15
Black cottonwood (Populus trichocarpa)
14
1
TOTAL SIGNIFICANT TREE ON SITE 12
Trees #1 and #2 are offsite, tree #10 is non -significant due to size.
Species and sizes per Shoffner Arborist Report
See Civil Drawings for tree protection fencing.
ORIGINAL SUBMITTAL 12-12-18 SURVEYED: SCALE:
SURVEYED
REVISE PLAN DUE TO DRIVEWAY CHANGES 12-30-19 SCALE
DESIGNED:
REVISE PLAN DUE TO CITY COMMENTS 4-29-20 NEIL
DRAWN:
DRAWN
ONE INCH
CHECKED: AT FULL SCALE
CHECKED IF NOT ONE INCH
REVISION BY DATE AP P R APPROVED: SCALE ACCORDINGLY
APPROVED
VERTICAL: NAVD 1988
HORIZONTAL: NAD 1983/1991
DATU M
CITY OF
RENTON
Planning/Building/Public Works Dept.
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STATE of GHA Landscape Architects
WASHINGTON 1417 NE 80th St.
REGISTERED SEATTLE, WA 98115
LANDSCAPE ARCHITECT
����M� TELE 206.522.2334 FAX 206.526.5667
q �-=—�"`n--QCGHA Landscape Architects 2018
L BUCHANAN
CERTIFICATE No. 513 J
R-411309
IN COMPLIANCE WITH CITY OF RENTON STANDARDS
O
PLANNING DIVISION
APPROVED Cn
12/18/2020 jding Z
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DATE:
NGOCHAN SHORT PLAT 12-12-2018 Z
10814 SE 173RD STREET, RENTON WA 98055 FIELDBOOK:
PAGE:
DRAWING NO:
TREE RETENTION PLAN SHEET: Ll OF::
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