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8716 304th Ave Ct E
Graham, WA 98338
Arborist Report
Location: 214 Ilwaco Place SE, Renton 98058
Parcel #: 7787050090
Lot Area: 8,299 Sq Ft
Re: Removal of 5 Significant Trees, Species: Douglas Fir
Project Arborist: Brad Case, ISA Certified Arborist #PN-7332A
Cell (253) 850-7677 | Email brad@devotedgroup.com
Assignment and Scope of Report
This report outlines the site inspection completed by Brad Case of Devoted Tree
Solutions during February 2021. Below is a full arborist report to document my findings
and management recommendations. Ceybom Newton, owner of the property, requested
these services to assist with permitting.
Observations and Discussion
The Site and History
According the King County iMap there are no critical areas on this site. The site is zoned
as R-4 and is required to maintain a minimum density of two trees per 5,000 square feet.
Using the formula provided on RentonGov.Wa ((LotArea/5,000sq.ft.)x2)), this property
is to maintain a minimum density of 4 Significant Trees. In conjunction with the
replanting plan provided below, this site will exceed the minimum density required for
this property.
The Trees
I examined a row of 5 Douglas fir. The trees have 12”, 18”, 23” 24”, and 28” DBH
respectively, which classifies each tree as Significant.
8716 304th Ave Ct E
Graham, WA 98338
Three trees contain extremely tall co-dominant stems and oversized branches due to a
previous topping estimated 35 to 40 years ago. These three trees exhibit a high risk of
failure due to weak attachments and included bark in addition to the extreme height.
The trees are located in a fairly new development and are open to wind forces from all
directions. Due to the high risk and high consequences of failure standards for three of
the five Douglas Firs, removing only these three would create a much higher risk of
failure and impact for the remaining two. It is therefore recommended to remove all five
Douglas Firs in this row and to replant with a more suitable species given the constraints
of the space available (see Replanting Plan below).
Replanting Plan
The overall lot size of this property is very small with roughly 40 linear feet in the
specific area in which the Douglas Firs are currently. I recommend a replanting of three
Excelsa Cedars (Thuja Plicata Excelsa). There are existing Excelsa Cedars on either side
of the row of Firs to be removed. These existing Cedars, along with the replanting plan,
will maintain the minimum density required on the property.
Tree Removal Inventory
Tree Species Height / DBH Health Notes
1 Douglas Fir 80’ Height / 28” DBH High Risk of Failure Trees occupy roughly 40 linear
feet on rear property line. Three
of the five trees contain
extremely tall co-dominant
stems (upwards of 50’) and
oversized branches due to a
previous topping estimated 35
to 40 years ago.
2 Douglas Fir 65’ Height / 12” DBH
3 Douglas Fir 80’ Height / 18” DBH
4 Douglas Fir 80’ Height / 25” DBH High Risk of Failure
5 Douglas Fir 80’ Height / 28” DBH High Risk of Failure
8716 304th Ave Ct E
Graham, WA 98338
Site Map
SE 2nd Place
N
8716 304th Ave Ct E
Graham, WA 98338
Photographs
Photo 1: Looking from SE 2nd Place (behind property). Five Douglas Fir trees with co-
dominate stems and large branches overhanging house, sidewalk, and street.
5 4 3 2 1
Crotch of co-dominate stem,
#5 on Tree Removal
Inventory.
8716 304th Ave Ct E
Graham, WA 98338
Photo 2: Looking from SE 2nd Place (behind property). Five Douglas Fir trees in
proximity to house (~20 feet from base of tree to back of house) and distance from each
other (~40 linear feet total).
Photo 3: Looking up from ground level. Distress occurring within the 5 Douglas Fir trees:
deadwood, overcrowding, long/oversized branches due to topping.
8716 304th Ave Ct E
Graham, WA 98338
Photo 4: Douglas Fir #1 on Tree Removal Inventory.
Crotch of co-dominate stem