HomeMy WebLinkAboutTR_Arborist Report_v1Shoffner Consulting
6741 NE 182nd St. Unit C401 Kenmore, WA 98028 Mobile:(206)755-9407
November 23, 2018
Doan Nguyen
4064 S 146th St.
Tukwila, WA
98168
RE: Tree Inventory and Retention Plan - 10814 SE 173rd St. Renton, WA.
Neil:
This report is provided to report on the results of the tree inventory of the property at the
address of 10814 SE 173rd St. in the City of Renton WA. I visited the site recently to
inventory
1.0 City of Renton Tree Report Requirements
The contents of this report provide the following information as specified in RMC
4-8-120D20 c through e. See the accompanying tree inventory map and tree evaluation
data spreadsheet for information on these trees.
c. Species and sizes of vegetation to be removed, altered or retained and the
boundaries and predominant species of stands of trees consisting of five (5) or more
trees. This requirement applies only to trees six inch (6") caliper and larger, fifty four
inches (54") above grade, and the location, size and species of all protected trees on
the site;
d. For trees proposed to be retained, a complete description of each tree’s health,
condition, and viability;
e. For trees proposed to be retained, a description of the method(s) used to determine
the limits of disturbance (i.e., critical root zone, root plate diameter, or a case-by-case
basis description for individual trees).
2.0 Site Conditions
The property is currently undeveloped in a single family residence neighborhood. It is
overgrown with native shrubs and Himalayan blackberry. The topography is flat and
there are no wetlands located on the property.
3.0 Tree Inventory Methods and Results
I conducted visual, level 2 basic evaluations of all the trees according to ISA standards
and based upon many years conducting such evaluations on trees in the Pacific
Northwest. I oberserved trees up close to inspect conditions of the trunk and from afar
to inspect conditions in the crowns. All assessments were conducted according to the
methods specified in the ISA Tree Risk Assessment Manual and on nearly 20 years
experience conducting such evaluations.
The investigations involved the gathering of the following information:
• Tree species
• Trunk diameter
• Crown spread diameter
• Location factors
• Health and condition notes (general level of vigor, defects, disease or pest
problems)
The tree inventory map shows 16 trees. Two are located just off-site within the right-of-
way. These are included in the inventory spreadsheet as trees #1 and #2. A third tree is
located just off-site on the property to the north, adjacent to a proposed area of tree
retention on the property. Since this tree is well away from any impacts, it was not
included in the inventory.
3.0 Required Tree Retention and Proposed
The property is located in a residential zone and is planned to be developed with single
family residences, therefore tree retention is required at 2 trees per every 5,000 square
feet of property area. At total area of 10,800 square feet, retention/replacent is required
with 4 trees.
The site plan proposes the retention of the following 5 trees: 3, 4, 13, 14, 15. Following
is a complete description of each of the retained trees’ health:
Tree #3 This tree is a medium sized black cottonwood that is in good condition and
health. No defects were noted.
Tree #4 This tree is a small sized black cottonwood that is in good condition and
health. No defects were noted.
Tree #13 This tree is a small sized black cottonwood that is in good condition and
health. No defects were noted.
Tree #14 This tree is a medium sized black cottonwood that is in good condition and
health. No defects were noted.
Tree #15 This tree is a small sized black cottonwood that is in good condition and
health. No defects were noted.
All five of the trees proposed to be retained are found to be in good condition and
health.
4.0 Use of This Report
This Tree Inventory report is provided to Doan Nguyen as a means of addressing the
proposed site plan changes and the resulting impacts to trees previously proposed to be
retained affecting the total tree retention numbers. No site visit was made for the
preparation of this report, therefore, the conditions of the trees proposed to be retained
are not specified nor warranted. Shoffner Consulting cannot be held liable for the failure
of any retained trees.
Please call if you have any additional questions.
Cordially,
Tony Shoffner
ISA Certified Arborist #PN-0909A, TRAQ
TREE EVALUATION DATA
10814 SE 173rd St. Renton, WA.Shoffner Consulting - November 23, 2018
Tree #Species dbh Dripline Condition Notes Status
1 Lombardy poplar (Populus nirgra ‘italica’)46 32 3 Fair condition and health. Deadwood in crown.To be removed.
2 Lombardy poplar (Populus nirgra ‘italica’)12 16 1 Good condition and health. Young and vigorous.To be removed.
3 Black cottonwood (Populus trichocarpa)20 42 2 Generally good condition and health. Large and older.To be retained.
4 Black cottonwood (Populus trichocarpa)10 28 1 Good condition and health. Young and vigorous.To be retained.
5 Western red cedar (Thuja plicata)10 15 1 Good condition and health. Young and vigorous.To be removed.
6 Douglas fir (Pseudostuga menziesii)8 15 1 Good condition and health. Young and vigorous.To be removed.
7 Douglas fir (Pseudostuga menziesii)8 16 1 Good condition and health. Young and vigorous.To be removed.
8 Douglas fir (Pseudostuga menziesii)8 15 1 Good condition and health. Young and vigorous.To be removed.
9 Western red cedar (Thuja plicata)6 15 1 Good condition and health. Young and vigorous.To be removed.
10 Black cottonwood (Populus trichocarpa)6 24 1 Good condition and health. Young and vigorous.To be removed.
11 Black cottonwood (Populus trichocarpa)24 42 2 Generally good condition and health. Large and older.To be removed.
12 Black cottonwood (Populus trichocarpa)30 45 2 Generally good condition and health. Large and older.To be removed.
13 Black cottonwood (Populus trichocarpa)16 42 1 Good condition and health. Young and vigorous.To be retained.
14 Black cottonwood (Populus trichocarpa)26 40 2 Generally good condition and health. Large and older.To be retained.
15 Black cottonwood (Populus trichocarpa)14 46 1 Good condition and health. Young and vigorous.To be retained.
Tree # - Number of tree assigned on survey tag
Species - Genus and species
Size - Diameter in inches at 4.5’ above grade
Dripline - Diameter in feet of tree crown spread/dripline
Condition - Rating scale of tree condition
1=Excellent condition and health; 2=Generally good condition and health; 3=Fair condition and
health, some defects; 4=Poor condition and health or dead, to be removed.
Notes - Notes on general tree condition and health and any defects present in the trunk or crown.
Status - Exceptional or not exceptional. Retain or Remove I (impacts), Remove C (condition)
IRZ - Inner root zone radius from tree in feet
Max ORZ S.F. - Maximum allowable area (squiare feet) to be impacted within the ORZ (outer root zone)
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