LAYTON TREE CONSULTING, LLC
It’s all about trees……
PO BOX 572, SNOHOMISH, WA 98291-0572 * 425-220-5711 * [email protected]
ARBORIST REPORT/TREE PLAN
PSR Short Plat
5109 154th Avenue NE
Redmond, WA
Report Prepared by:
Bob Layton
Registered Consulting Arborist #670
Certified Arborist #PN-2714A
June 14, 2021
Arborist Report – 5109 154th AVE NE
Page 2 Layton Tree Consulting LLC June 14, 2021
Table of Contents Assignment.................................................................................................................................................... 3
Description .................................................................................................................................................... 3
Methodology ................................................................................................................................................. 3
Judging Condition...................................................................................................................................... 4
Judging Retention Suitability .................................................................................................................... 4
Observations ................................................................................................................................................. 5
Discussion/Recommendations ...................................................................................................................... 5
Tree Protection Measures ............................................................................................................................ 6
Tree Retention Calculation ........................................................................................................................... 7
Tree Replacement ......................................................................................................................................... 8
Arborist Disclosure Statement ...................................................................................................................... 8
Attachments
Photos, pages 9 - 14
Tree Summary Tables
Tree Measurements Summary Table
Redmond On-Site Tree Health Assessment Table
Redmond Off-Site Tree Health Assessment Table
Redmond On-Site Retained Tree Table
Redmond On-Site Removed Tree Table
Maps
Aerial Map
Tree Retention & Replacement Plan Map by CPH Consultants
Redmond Tree Protection Barrier Information
Arborist Report – 5109 154th AVE NE
Page 3 Layton Tree Consulting LLC June 14, 2021
Assignment Layton Tree Consulting, LLC was asked to compile an Arborist Report for a property in Redmond. The
subject property is located at 5109 154th AVE NE and involves a proposed 7-Lot Short Plat and the future
construction of seven new single-family residences on the property. My assignment is to prepare a
written report on present tree conditions, and to provide appropriate recommendations for the
protection of retained trees during development.
This report encompasses all of the criteria set forth under the City of Redmond’s tree regulations,
particularly Redmond Zoning Code 21.72 Tree Protection. A ‘significant’ tree is defined as “Any healthy
tree six inches in diameter at breast height (d.b.h.), or any tree four inches in diameter at breast height
(d.b.h.) that, after considering its age, height, value, or function, the tree or tree stand is determined to
be significant”. 35% of the significant trees on the site are required to be retained.
Date of Field Examination: April 8, 2021
Description The property is roughly 1.4 acres in size. Topography is generally flat across the site. There does not appear to be any critical areas on or adjacent to the property. There are two existing small single-family residences on the south side of the property. The north side of the property is vacant with a dilapidated barn. Adjacent properties to the north and east are single-family residential. The adjacent property to the west is currently vacant with an old barn like structure. The Microsoft campus is to the south. A total of 68 trees that are greater than 6-inches in diameter were identified and assessed on the subject property. The vast majority of these are not significant trees. These are mostly comprised of declining native alder trees on the north side of the property. A numbered aluminum tag was attached to the lower trunk of the subject trees by another party. These same tag numbers were used for this report. Tree tag numbers correspond with the numbers on the attached Tree Summary Tables and map. An additional six off-site trees were also assessed. These are all located within a proximity of the north property line. There are no street tree issues or neighboring tree issues on the property to the west.
Methodology Each tree in this report was visited. Tree diameters were measured by tape. The tree heights were measured using a Spiegel Relaskop. Each tree was visually examined for defects and vigor. The tree assessment procedure involves the examination of many factors:
• The crown or canopy of the tree is examined for current vigor/health by examining the foliage for appropriate color and density, the vegetative buds for color and size, and the branches for structural form and annual shoot growth; and the overall presence of limb dieback and/or any disease issues.
• The trunk or main stem of the tree is inspected for decay, which includes cavities, wounds, fruiting bodies of decay (conks or mushrooms), seams, insect pests, bleeding or exudation of sap, callus development, broken or dead tops, structural defects and unnatural leans. Structural defects can
Arborist Report – 5109 154th AVE NE
Page 4 Layton Tree Consulting LLC June 14, 2021
include but are not limited to excessive or unnatural leans, crooks, forks with V-shaped crotches, multiple attachments.
• The root collar and exposed surface roots are inspected for the presence of decay, insect damage, as well as if they have been injured or wounded, undermined or exposed, or the original grade has been altered.
Based on these factors a determination of condition is made.
Judging Condition
The three condition categories are described as follows:
Good – free of significant structural defects, no disease concerns, minor pest issues, no significant root issues, good structure/form with uniform crown or canopy, foliage of normal color and density, average or normal vigor, will be wind firm if isolated or left as part of a grouping or grove of trees, suitable for its location Fair – minor to moderate structural defects not expected to contribute to a failure in near future, no disease concerns, moderate pest issues, no significant root issues, asymmetric or unbalanced crown or canopy, average or normal vigor, foliage of normal color, moderate foliage density, will be wind firm if left as part of a grouping or grove of trees, cannot be isolated, suitable for its location Poor – major structural defects expected to cause fail in near future, disease or significant pest concerns, decline due to old age, significant root issues, asymmetric or unbalanced crown or canopy, sparse or abnormally small foliage, poor vigor, not suitable for its location
Judging Retention Suitability
Not all trees necessarily warrant retention. The three retention suitability categories as described in
ANSI A300 Part 5 (Standard Practices for the Management of Trees During Site Planning, Site
Development and Construction) are as follows:
Good – trees are in good health condition and structural stability and have the potential for longevity at
the site
Fair – trees are in fair health condition and/or have structural defects that can be mitigated with
treatment. These trees may require more intense management and monitoring, and may have shorter
life-spans than those in the “good” category.
Poor – trees are in poor health condition and have significant defects in structure that cannot be
mitigated with treatment. These trees can be expected to decline regardless of management. The
species or individual tree may possess characteristics that are incompatible or undesirable in landscape
settings or be unsuited for the intended use of the site.
Arborist Report – 5109 154th AVE NE
Page 5 Layton Tree Consulting LLC June 14, 2021
Observations The majority of the property is sparsely treed or contains little tree cover. Evergreen species include 10
spruce trees and one Douglas fir. Three spruce trees were planted at the front of the property and
seven adjacent to the west property line. The majority of these are of good vigor, with foliage of normal
color and density. Only one was found to be in poor condition. This is tree #5136 which is over-topped
and heavily suppressed by the larger adjacent trees. It is roughly 95% dead and in ultimate decline. The
single Douglas fir tree is in good condition with no concerning defect. It is just over 30-inches in
diameter and therefore considered a ‘landmark’ tree. It is the only ‘landmark’ tree on the property.
Deciduous trees are comprised of some wild crabapple clusters, a couple planted apple trees, and native
species of several red alder, five bitter cherry, two black cottonwood and one Scouler’s willow. Apple
trees have developed typical form. Most are mature. Several of the crabapples are in poor condition
and not considered significant. These have succumbed to large stem or branch failures in the recent
past, have developed poor structural form, and are compromised by trunk decay.
Native species are found at the north end of the site. These have regenerated naturally after the site
was cleared or soils were disturbed a few decades ago. The alder and bitter cherry are in a general state
of decline. Several have died over the last few years. Many are in obvious decline, evident by dead and
or dying upper crown components. Most have black staining and sunscald damage on the lower trunks
indicating dieback of cambium. Retention suitability is ‘poor’.
The two black cottonwoods have developed typical form. Both have developed very poor stem taper
under competition with the alder for sunlight and space. These are young specimens, approximately 25
to 30 years of age that have already reached heights of almost 80-feet. Retention suitability is ‘poor’.
The Scouler’s willow is in poor condition. It is 50% dead with a dead top. It is in ultimate decline.
There is a planted row of mature Pyramidalis arborvitae shrubs close to the east property line. These
are not significant trees. Most are of good vigor and in good condition.
The north half of the property has a major infestation of invasive Himalayan blackberry and English ivy.
Off-Site Trees
The six neighboring trees are located close to the north property line. These are comprised of five
Douglas fir and one Leyland cypress. Four of the Douglas fir are young to semi-mature specimens. All
are of good vigor with no concerning defects. Tree #106 is of a much older age class. It is a ‘landmark’
tree. It is located roughly 10-feet off of the property line. Condition is good. The Leyland cypress is also
in good condition with no concerning defect.
Discussion/Recommendations The stand of red alder trees at the north end is not sustainable and has a retention suitability rating of
‘poor’. The majority are showing signs of premature decline. This is a very short-lived species,
particularly on sites where soils have been graded or disturbed like this site. These trees will continue to
die out. Retention would be fruitless. The property and surrounding community will be much better
Arborist Report – 5109 154th AVE NE
Page 6 Layton Tree Consulting LLC June 14, 2021
served by the planting of new trees that can provide long-term benefits to the area. The retention of
the two young black cottonwood trees (#5565 & #5567) is not recommended. These are problematic
and will become a liability in the future, particularly for the neighboring properties to the north.
Removal is warranted.
The extent of drip-lines (farthest reaching branches) for the subject trees can be found on the tree
summary tables at the back of this report. The extent of driplines for trees to be retained or protected
at the site are shown on the attached Tree Plan Map. The tree protection barrier shall be placed at the
5-foot dripline setback as shown on the attached map.
It is my understanding the City is requiring the construction of a new public street as part of this project
and has dictated the location of that street, as shown on the attached map. Unfortunately, this street
location will necessitate the removal of most of the highest retention value trees (evergreens) on the
property, Trees #5052, #5054, #5135, #5137, #5138 and #5139.
The proposal is to retain trees #5130, #5131, #5132, #5550 and #5551. These are well-positioned for
successful retention on property perimeters. The ivy needs to be cut from the bases of #5550 and
#5551 as soon as possible. Cut the ivy vines at ground level and again as high as can be easily reached.
Carefully remove cut vine sections. The remaining ivy the tree crown will eventually die and fall out of
the tree, although this will take a few years.
To adequately protect the neighboring or off-site trees, provide a no disturbance zone of 10-feet from
the property line. Position the tree protection barrier at the 5-foot dripline setback as shown on the
attached map, 10-feet from the property line. No grading, fills, etc. shall be allowed within the tree
protection zone.
Any authorized work within the five-foot drip-line setback of retained and/or protected trees shall be
supervised by the project arborist in an effort to ensure impacts are kept to acceptable levels.
The removal of trees from the property is not expected to have any adverse effects on trees to remain
at the site, either on or off of the property.
Simply finish the landscape within the driplines of any retained trees by cutting/hand-pulling any
unwanted vegetation and applying a 2 to 4-inch covering of organic mulch/beauty bark. Keep large
plantings, irrigation/dispersion trenches and construction of hardscapes outside of the 5-foot dripline
setback of retained and/or protected trees.
Tree Protection Measures The following guidelines are recommended to ensure that the designated space set aside for the
preserved trees are protected and construction impacts are kept to a minimum. Standards have been
set forth under Redmond Zoning Code 21.72.060. Please review these standards prior to any
development activity.
Arborist Report – 5109 154th AVE NE
Page 7 Layton Tree Consulting LLC June 14, 2021
• Tree protection fencing shall be erected per attached tree plan map prior to moving any heavy
equipment on site. Doing this will set clearing limits and avoid compaction of soils within root
zones of retained trees.
• Excavation limits shall be laid out in paint on the ground to avoid over excavating.
• Authorized excavation within the driplines shall be monitored by a qualified tree professional so
necessary precautions can be taken to decrease impacts to tree parts. A qualified tree
professional shall monitor excavations when work is required and allowed within the drip-line or
critical root zone.
• To establish sub grade for foundations, curbs and pavement sections near the trees, soil shall be
removed parallel to the roots and not at 90-degree angles to avoid breaking and tearing roots
that lead back to the trunk within the drip-line. Any roots damaged during these excavations
should be exposed to sound tissue and cut cleanly with a saw. Cutting tools should be sterilized
with alcohol.
• Areas excavated within the dripline of retained or protected trees shall be thoroughly irrigated
weekly during dry periods.
• Preparations for final landscaping shall be accomplished by hand within the drip-lines of
retained trees. Large equipment shall be kept outside of the tree protection zones at all times.
Tree Retention Calculation A total of 14 healthy significant trees were identified on the subject property. Trees with a condition rating of ‘good’ or ‘fair’ are included in this summary. ‘Poor’ condition trees are not included and considered non-significant. The eight significant trees within the required public street right-of-way are not included in this calculation. 35% Retention (5 trees) is required. Healthy Trees proposed for removal – 9 Healthy Trees to be impacted – 0 Healthy Trees proposed for retention – 5 The following table summarizes the tree retention calculation for healthy/sustainable trees only.
Tree Type Removal Impacted Retained Total
Landmark # 0 0 0 0
Landmark % 0% 100% 0% 100%
Significant # 9 0 5 14
Significant % 64% 0% 36% 100%
Total # 9 0 5 14
Total % 64% 0% 36% 100%
Arborist Report – 5109 154th AVE NE
Page 8 Layton Tree Consulting LLC June 14, 2021
Tree Replacement Replacement trees will be required according to RZC 21.72.080 Tree Replacement. Based on the table above, 9 replacement trees are required with a replacement ratio of 1:1 for significant trees. Consult with your City planner for final tree replacement requirements. The replacement of healthy significant trees from within the new public ROW may also be required. All replacement trees are to be planted on site. Replacement trees shall be at a minimum – 2 ½ inch caliper for deciduous species and 6 feet in height for coniferous species. The most appropriate locations for tree replacement are on the undisturbed perimeters of the site. Perimeters can be enhanced with native tree plantings of coniferous species to provide screening between residential properties and maintaining the character of the area. Recommended species include Western red cedar, grand fir, shore pine and Douglas-fir.
Arborist Disclosure Statement Arborists are tree specialists who use their education, knowledge, training and experience to examine
and assess trees, recommend measures to enhance the beauty and health of trees, and attempt to
reduce the risks associated with living near trees. Clients may choose to accept or disregard the
recommendations of the arborist, or to seek additional advice.
Arborists cannot detect every condition that could possibly lead to the structural failure of a tree. Trees
are living organisms that grow, respond to their environment, mature, decline and sometimes fail in
ways we do not fully understand. Conditions are often hidden within trees and below ground.
Arborists cannot guarantee that a tree will be healthy and/or safe under all circumstances, or for a
specified period of time. Likewise, remedial treatments, like any medicine, cannot be guaranteed.
Treatment, pruning and removal of trees may involve considerations beyond the scope of the arborist’s
services such as property boundaries, property ownership, site lines, disputes between neighbors, and
other issues. Arborists cannot take such considerations into account unless complete and accurate
information is disclosed to the arborist. An arborist should then be expected to reasonably rely upon
the completeness and accuracy of the information provided.
Trees can be managed, but they cannot be controlled. To live near trees is to accept some degree of
risk. The only way to eliminate all risk associated with trees is to eliminate all trees.
Arborist Report – 5109 154th AVE NE
Page 9 Layton Tree Consulting LLC June 14, 2021
Photo Documentation
Tree #5122
Trees #5130, #5131 and #5132
Arborist Report – 5109 154th AVE NE
Page 10 Layton Tree Consulting LLC June 14, 2021
Tree #5135 (left) and #5136 (right)
Trees #5055 and #5056
Arborist Report – 5109 154th AVE NE
Page 11 Layton Tree Consulting LLC June 14, 2021
Trees #5051 > #5056
Trees #5547 > #5551
Arborist Report – 5109 154th AVE NE
Page 12 Layton Tree Consulting LLC June 14, 2021
Tree #5551, being consumed by English ivy
Subject alder in northwest corner of site, note broken and dead tops
Arborist Report – 5109 154th AVE NE
Page 13 Layton Tree Consulting LLC June 14, 2021
Recent dead alder trees at north end of property
Alder with major sunscald damage (arrow)
Arborist Report – 5109 154th AVE NE
Page 14 Layton Tree Consulting LLC June 14, 2021
Black staining on alder trunks indicating dead cambium and ultimate decline
Neighboring evergreen trees in background
Layton Tree Consulting LLC
For: PSR Short Plat
Site: 5109 154th AVE NE - Redmond
Tree Measurements Summary Table
Date:
Tree/ DBH Height
Tag # Species (inches) (feet) Condition Comments
N S E W
5122 apple 21 40 14 18 18 16 Fair mature, moderate trunk decay
5050 crabapple 9,8,6 (8) 30 14 14 10 13 Fair cluster, typical, recent broken top
5049 crabapple 8,6 (7) 27 14 14 14 6 Fair wild,typical
5048 apple 18 15 13 11 6 14 Fair excessively pruned, topped
5051 Norway spruce 23 51 15 14 18 14 Fair broken top or topped in past,heavy cone crop
5052 Colorado spruce 20 61 10 14 15 10 Good minor spruce gall infestation, minor broken top
5053 crabapple 9 28 12 8 5 7 Fair bent top, suppressed by spruce
5056 crabapple 10 8 x x x x Poor trunk broken at 8 feet
5055 crabapple 7 16 x x x x Poor major lean south, very poor structure
5054 Colorado spruce 26 62 12 19 14 13 Good minor spruce gall infestation, minor broken top
5130 Colorado spruce 21 49 13 13 15 13 Good good form, good vigor, minor gall infestation
5131 Colorado spruce 18 47 15 24 15 13 Good good form, good vigor, minor gall infestation
5132 Colorado spruce 17 40 18 14 13 15 Good large exposed damaged surface root
5135 Douglas fir 30 84 16 22 17 18 Good old broken top
5136 Colorado spruce 8 36 x x x x Poor 95% dead, over topped
5137 Colorado spruce 20 73 12 12 18 14 Good good form, good vigor, minor gall infestation
5138 Colorado spruce 15 67 11 6 10 14 Good good form, good vigor, minor gall infestation
5139 Colorado spruce 29 66 20 13 18 18 Good good form, good vigor, minor gall infestation
5073 crabapple 6 21 x x x x Poor heavy lean east, small live crown
5072 crabapple 11 36 7 12 11 14 Fair mature,decent form
5074 crabapple 6 12 x x x x Poor trunk broken at 12 feet
5549 crabapple 9,6 (8) 21 x x x x Poor extensive trunk decay, 50% dead
5548 bitter cherry 16 34 12 18 18 14 Fair mature, trunk covered in ivy
5547 apple 15,10 (13) 30 10 12 6 14 Fair mature, poor form,ivy
5550 bitter cherry 9 40 8 12 5 9 Fair poor form, ivy
5551 bitter cherry 12,12 (12) 46 14 10 14 12 Fair trunks completely covered in ivy
5575 red alder 11 49 11 22 14 10 Poor not sustainable
5574 red alder 12,11 (12) 51 16 10 14 12 Poor not sustainable
Drip-Line
(feet)
4/6/2021
Layton Tree Consulting LLC
For: PSR Short Plat
Site: 5109 154th AVE NE - Redmond
Tree Measurements Summary Table
Date:
Tree/ DBH Height
Tag # Species (inches) (feet) Condition Comments
N S E W
Drip-Line
(feet)
4/6/2021
5552 red alder 9 47 6 8 6 8 Poor not sustainable
5553 red alder 11 42 x x x x Poor major suscald damage, decline
5560 red alder 10 30 x x x x Poor broken top, in decline
5561 red alder 13 33 x x x x Poor 70% dead, major decline
5558 red alder 11 45 x x x x Poor heavy lean west, not sustainable
5557 red alder 7 25 x x x x Poor large basal cavity, bent top
5556 red alder 8 43 12 4 4 8 Poor not sustainable
5554 red alder 9 43 12 4 4 6 Poor not sustainable
5563 red alder 10 45 x x x x Poor major suscald damage, decline
5564 red alder 12 42 x x x x Poor not sustainable, black spotting, cambium dieback
5555 bitter cherry 8 45 8 6 6 8 Poor not sustainable
5570 red alder 7 42 x x x x Poor heavy lean south, not sustainable
5566 red alder 10 44 6 12 7 6 Poor not sustainable
5562 red alder 8 40 x x x x Poor recent dead top,in decline
5500 red alder 10 44 x x x x Poor major lean south, very poor structure
5565 black cottonwood 16 78 16 12 10 12 Poor not sustainable
5567 black cottonwood 14 78 16 4 12 10 Poor young, natural lean north, forked top, not sustainable
5595 red alder 13 46 x x x x Poor dead top, major sunscald
5596 red alder 11 48 x x x x Poor not sustainable
5597 red alder 11 46 x x x x Poor heavy lean south, not sustainable
5598 red alder 7 38 x x x x Poor recent dead top,in decline
5599 red alder 11 46 2 12 8 4 Poor not sustainable
5628 red alder 6 42 6 4 4 4 Poor not sustainable
5627 red alder 10 40 0 14 4 4 Poor heavy lean south, not sustainable
5601 red alder 7 35 x x x x Poor recent dead top,in decline
5629 red alder 10 44 6 10 10 6 Poor not sustainable
5630 red alder 7 42 6 4 6 4 Poor not sustainable
5600 Scoulers willow 14 44 x x x x Poor dead top, 50% dead
Layton Tree Consulting LLC
For: PSR Short Plat
Site: 5109 154th AVE NE - Redmond
Tree Measurements Summary Table
Date:
Tree/ DBH Height
Tag # Species (inches) (feet) Condition Comments
N S E W
Drip-Line
(feet)
4/6/2021
5602 red alder 7 20 x x x x Poor broken, 90% dead
5603 red alder 6 16 x x x x Poor broken, 90% dead
5626 red alder 11 38 x x x x Poor recent dead top,in decline
5625 red alder 7 43 x x x x Poor not sustainable
5624 red alder 8 40 x x x x Poor recent dead top,in decline
5623 red alder 8 42 x x x x Poor not sustainable
5621 bitter cherry 8 38 8 10 10 8 Poor poor form, not sustainable
5620 apple 15 26 14 14 16 8 Fair leans east, surrounded by dense brush
5619 red alder 12 40 x x x x Poor major suscald damage, decline
5618 red alder 12 42 x x x x Poor not sustainable
5617 red alder 13 48 x x x x Poor not sustainable
5075 bigleaf maple 15,11,7 (11) 48 16 18 18 18 Fair typical cluster, decent vigor
Off-Site/Neighboring Trees
101 Douglas fir 8 37 NA 10 8 8 Good young specimen
102 Douglas fir 11 44 NA 10 6 12 Good young specimen
103 Leyland cypress 18 48 NA 16 16 12 Good forked top, typical
104 Douglas fir 12 56 NA 10 8 8 Good young specimen
105 Douglas fir 15 58 NA 12 10 14 Good young specimen
106 Douglas fir 34 120 NA 18 16 14 Good approx 10 feet off PL,
Drip-Line measurements from face of trunk
Layton Tree Consulting LLC
For: PSR Short Plat
Site: 5109 154th Ave NE - Redmond
Redmond On-Site Tree Health Assessment Table
Date:
Landmark
Specific Photo # Exception
Tree/ Evergreen or Tree Healthy Fair Dead or If photo of Meets Significant Meets Landmark Retained Request
Tag # Deciduous Species DBH Dying tree provided Tree Classification? Tree Classification? yes/no Required? Notes
5122 Deciduous apple 21 x page 9 yes no mature, moderate trunk decay
5050 Deciduous crabapple 8 x yes no cluster, typical, recent broken top
5049 Deciduous crabapple 7 x yes no wild,typical
5048 Deciduous apple 18 x yes no excessively pruned, topped
5051 Evergreen Norway spruce 23 x page 11 yes no-in ROW broken top or topped in past,heavy cone crop
5052 Evergreen Colorado spruce 20 x page 11 yes no-in ROW minor spruce gall infestation, minor broken top
5053 Deciduous crabapple 9 x page 11 yes no-in ROW bent top, suppressed by spruce
5056 Deciduous crabapple 10 x page 10 no no trunk broken at 8 feet
5055 Deciduous crabapple 7 x page 10 no no major lean south, very poor structure
5054 Evergreen Colorado spruce 26 x page 11 yes no-in ROW minor spruce gall infestation, minor broken top
5130 Evergreen Colorado spruce 21 x page 9 yes yes good form, good vigor, minor gall infestation
5131 Evergreen Colorado spruce 18 x page 9 yes yes good form, good vigor, minor gall infestation
5132 Evergreen Colorado spruce 17 x page 9 yes yes large exposed damaged surface root
5135 Evergreen Douglas fir 30 x page 10 yes yes no-in ROW no-in ROW old broken top, in new public ROW
5136 Evergreen Colorado spruce 8 x dying page 10 no no 95% dead, over topped
5137 Evergreen Colorado spruce 20 x yes no-in ROW good form, good vigor, minor gall infestation
5138 Evergreen Colorado spruce 15 x yes no-in ROW good form, good vigor, minor gall infestation
5139 Evergreen Colorado spruce 29 x yes no-in ROW good form, good vigor, minor gall infestation
5073 Deciduous crabapple 6 x decline no no heavy lean east, small live crown
5072 Deciduous crabapple 11 x yes no mature,decent form
5074 Deciduous crabapple 6 x broken no no trunk broken at 12 feet
5549 Deciduous crabapple 8 x dying page 11 no no extensive trunk decay, 50% dead
5548 Deciduous bitter cherry 16 x page 11 yes no mature, trunk covered in ivy
5547 Deciduous apple 13 x page 11 yes no mature, poor form,ivy
5550 Deciduous bitter cherry 9 x page 11 yes yes poor form, remove ivy
5551 Deciduous bitter cherry 12 x page 11 yes yes trunks completely covered in ivy - remove ivy
5575 Deciduous red alder 11 x decline pg 12,13,14 no no not sustainable
5574 Deciduous red alder 12 x decline pg 12,13,14 no no not sustainable
5552 Deciduous red alder 9 x decline pg 12,13,14 no no not sustainable
5553 Deciduous red alder 11 x dying pg 12,13,14 no no major suscald damage, decline
5560 Deciduous red alder 10 x decline pg 12,13,14 no no broken top, in decline
5561 Deciduous red alder 13 x dying pg 12,13,14 no no 70% dead, major decline
5558 Deciduous red alder 11 x decline pg 12,13,14 no no heavy lean west, not sustainable
5557 Deciduous red alder 7 x decline pg 12,13,14 no no large basal cavity, bent top
5556 Deciduous red alder 8 x decline pg 12,13,14 no no not sustainable
5554 Deciduous red alder 9 x decline pg 12,13,14 no no not sustainable
5563 Deciduous red alder 10 x dying pg 12,13,14 no no major suscald damage, decline
5564 Deciduous red alder 12 x dying pg 12,13,14 no no not sustainable, black spotting, cambium dieback
5555 Deciduous bitter cherry 8 x decline pg 12,13,14 no no not sustainable
5570 Deciduous red alder 7 x decline pg 12,13,14 no no heavy lean south, not sustainable
5566 Deciduous red alder 10 x decline pg 12,13,14 no no not sustainable
5562 Deciduous red alder 8 x dying pg 12,13,14 no no recent dead top,in decline
5500 Deciduous red alder 10 x decline pg 12,13,14 no no major lean south, very poor structure
5565 Deciduous black cottonwood 16 x pg 12,13,14 no no not sustainable
5567 Deciduous black cottonwood 14 x pg 12,13,14 no no young, natural lean north, forked top, not sustainable
5595 Deciduous red alder 13 x dying pg 12,13,14 no no dead top, major sunscald
5596 Deciduous red alder 11 x decline pg 12,13,14 no no not sustainable
4/8/2021
> 6" considered significant
Layton Tree Consulting LLC
For: PSR Short Plat
Site: 5109 154th Ave NE - Redmond
Redmond On-Site Tree Health Assessment Table
Date:
Landmark
Specific Photo # Exception
Tree/ Evergreen or Tree Healthy Fair Dead or If photo of Meets Significant Meets Landmark Retained Request
Tag # Deciduous Species DBH Dying tree provided Tree Classification? Tree Classification? yes/no Required? Notes
4/8/2021
> 6" considered significant
5597 Deciduous red alder 11 x decline pg 12,13,14 no no heavy lean south, not sustainable
5598 Deciduous red alder 7 x decline pg 12,13,14 no no recent dead top,in decline
5599 Deciduous red alder 11 x decline pg 12,13,14 no no not sustainable
5628 Deciduous red alder 6 x decline pg 12,13,14 no no not sustainable
5627 Deciduous red alder 10 x decline pg 12,13,14 no no heavy lean south, not sustainable
5601 Deciduous red alder 7 x dying pg 12,13,14 no no recent dead top,in decline
5629 Deciduous red alder 10 x decline pg 12,13,14 no no not sustainable
5630 Deciduous red alder 7 x decline pg 12,13,14 no no not sustainable
5600 Deciduous Scoulers willow 14 x dying pg 12,13,14 no no dead top, 50% dead
5602 Deciduous red alder 7 x dying pg 12,13,14 no no broken, 90% dead
5603 Deciduous red alder 6 x dying pg 12,13,14 no no broken, 90% dead
5626 Deciduous red alder 11 x dying pg 12,13,14 no no recent dead top,in decline
5625 Deciduous red alder 7 x decline pg 12,13,14 no no not sustainable
5624 Deciduous red alder 8 x dying pg 12,13,14 no no recent dead top,in decline
5623 Deciduous red alder 8 x decline pg 12,13,14 no no not sustainable
5621 Deciduous bitter cherry 8 x decline pg 12,13,14 no no poor form, not sustainable
5620 Deciduous apple 15 x pg 12,13,14 yes no leans east, surrounded by dense brush
5619 Deciduous red alder 12 x dying pg 12,13,14 no no major suscald damage, decline
5618 Deciduous red alder 12 x decline pg 12,13,14 no no not sustainable
5617 Deciduous red alder 13 x decline pg 12,13,14 no no not sustainable
5075 Deciduous bigleaf maple 11 x yes no typical cluster, decent vigor
22
21
1
Total On-Site Significant Trees Assessed
Total On-Site Significant Trees (6" - 29")
Total On-Site Landmark Trees (30"+)
8 of the 22 are within the
proposed new public ROW
Layton Tree Consulting LLC
For: PSR Short Plat
Site: 5109 154th Ave NE - Redmond
Redmond Off-Site Tree Health Assessment Table
Date:
Landmark
Specific Photo # Exception
Tree/ Evergreen or Tree Healthy Fair Dead or If photo of Meets Significant Meets Landmark Retained Request
Tag # Deciduous Species DBH Dying tree provided Tree Classification? Tree Classification? yes/no Required? Notes
101 Evergreen Douglas fir 8 x pg 14 yes young specimen
102 Evergreen Douglas fir 11 x pg 14 yes young specimen
103 Evergreen Leyland cypress 18 x pg 14 yes forked top, typical
104 Evergreen Douglas fir 12 x pg 14 yes young specimen
105 Evergreen Douglas fir 15 x pg 14 yes young specimen
106 Evergreen Douglas fir 34 x yes yes yes no approx 10 feet off property line, no concerns
6
5
1
4/8/2021
> 6" considered significant
Total Off-Site Trees Assessed
Total Off-Site Significant Trees (6" - 29")
Total Off-Site Landmark Trees (30"+)
Layton Tree Consulting LLC
For: PSR Short Plat
Site: 5109 154th Ave NE - Redmond
Redmond On-Site Retained Tree Table
Date:
Landmark
Specific Photo # Exception
Tree/ Evergreen or Tree Healthy Fair Dead or If photo of Meets Significant Meets Landmark Retained Request
Tag # Deciduous Species DBH Dying tree provided Tree Classification? Tree Classification? yes/no Required? Notes
5130 Evergreen Colorado spruce 21 x page 9 yes no yes no good form, good vigor, minor gall infestation
5131 Evergreen Colorado spruce 18 x page 9 yes no yes no good form, good vigor, minor gall infestation
5132 Evergreen Colorado spruce 17 x page 9 yes no yes no large exposed damaged surface root
5550 Deciduous bitter cherry 9 x page 11 yes no yes no remove ivy from lower trunk
5551 Deciduous bitter cherry 12 x page 11 yes no yes no remove ivy from lower trunk
5
5
0
4/8/2021
> 6" considered significant
Total Proposed for Retention
Total Significant Trees (6" - 29")
Total Landmark Trees (30"+)
Layton Tree Consulting LLC
For: PSR Short Plat
Site: 5109 154th Ave NE - Redmond
Redmond On-Site Removed Tree Table
Date:
Landmark
Specific Photo # Exception
Tree/ Evergreen or Tree Healthy Fair Dead or If photo of Meets Significant Meets Landmark Retained Request
Tag # Deciduous Species DBH Dying tree provided Tree Classification? Tree Classification? yes/no Required? Notes
5122 Deciduous apple 21 x page 9 yes no no no mature, moderate trunk decay
5050 Deciduous crabapple 8 x yes no no no cluster, typical, recent broken top
5049 Deciduous crabapple 7 x yes no no no wild,typical
5048 Deciduous apple 18 x yes no no no excessively pruned, topped
5051 Evergreen Norway spruce 23 x page 11 yes no no-in ROW no broken top or topped in past,heavy cone crop
5052 Evergreen Colorado spruce 20 x page 11 yes no no-in ROW no minor spruce gall infestation, minor broken top
5053 Deciduous crabapple 9 x page 11 yes no no-in ROW no bent top, suppressed by spruce
5056 Deciduous crabapple 10 x page 10 no no no no trunk broken at 8 feet
5055 Deciduous crabapple 7 x page 10 no no no no major lean south, very poor structure
5054 Evergreen Colorado spruce 26 x page 11 yes no no-in ROW no minor spruce gall infestation, minor broken top
5135 Evergreen Douglas fir 30 x page 10 yes yes no-in ROW no-in ROW old broken top
5136 Evergreen Colorado spruce 8 x dying page 10 no no no no 95% dead, over topped
5137 Evergreen Colorado spruce 20 x yes no no-in ROW no good form, good vigor, minor gall infestation
5138 Evergreen Colorado spruce 15 x yes no no-in ROW no good form, good vigor, minor gall infestation
5139 Evergreen Colorado spruce 29 x yes no no-in ROW no good form, good vigor, minor gall infestation
5073 Deciduous crabapple 6 x decline no no no no heavy lean east, small live crown
5072 Deciduous crabapple 11 x yes no no no mature,decent form
5074 Deciduous crabapple 6 x broken no no no no trunk broken at 12 feet
5549 Deciduous crabapple 8 x dying page 11 no no no no extensive trunk decay, 50% dead
5548 Deciduous bitter cherry 16 x page 11 yes no no no mature, trunk covered in ivy
5547 Deciduous apple 13 x page 11 yes no no no mature, poor form,ivy
5575 Deciduous red alder 11 x decline pg 12,13,14 no no no no not sustainable
5574 Deciduous red alder 12 x decline pg 12,13,14 no no no no not sustainable
5552 Deciduous red alder 9 x decline pg 12,13,14 no no no no not sustainable
5553 Deciduous red alder 11 x dying pg 12,13,14 no no no no major suscald damage, decline
5560 Deciduous red alder 10 x decline pg 12,13,14 no no no no broken top, in decline
5561 Deciduous red alder 13 x dying pg 12,13,14 no no no no 70% dead, major decline
5558 Deciduous red alder 11 x decline pg 12,13,14 no no no no heavy lean west, not sustainable
5557 Deciduous red alder 7 x decline pg 12,13,14 no no no no large basal cavity, bent top
5556 Deciduous red alder 8 x decline pg 12,13,14 no no no no not sustainable
5554 Deciduous red alder 9 x decline pg 12,13,14 no no no no not sustainable
5563 Deciduous red alder 10 x dying pg 12,13,14 no no no no major suscald damage, decline
5564 Deciduous red alder 12 x dying pg 12,13,14 no no no no not sustainable, black spotting, cambium dieback
5555 Deciduous bitter cherry 8 x decline pg 12,13,14 no no no no not sustainable
5570 Deciduous red alder 7 x decline pg 12,13,14 no no no no heavy lean south, not sustainable
5566 Deciduous red alder 10 x decline pg 12,13,14 no no no no not sustainable
5562 Deciduous red alder 8 x dying pg 12,13,14 no no no no recent dead top,in decline
5500 Deciduous red alder 10 x decline pg 12,13,14 no no no no major lean south, very poor structure
5565 Deciduous black cottonwood 16 x pg 12,13,14 no no no no not sustainable
5567 Deciduous black cottonwood 14 x pg 12,13,14 no no no no young, natural lean north, forked top, not sustainable
5595 Deciduous red alder 13 x dying pg 12,13,14 no no no no dead top, major sunscald
5596 Deciduous red alder 11 x decline pg 12,13,14 no no no no not sustainable
5597 Deciduous red alder 11 x decline pg 12,13,14 no no no no heavy lean south, not sustainable
5598 Deciduous red alder 7 x decline pg 12,13,14 no no no no recent dead top,in decline
5599 Deciduous red alder 11 x decline pg 12,13,14 no no no no not sustainable
5628 Deciduous red alder 6 x decline pg 12,13,14 no no no no not sustainable
5627 Deciduous red alder 10 x decline pg 12,13,14 no no no no heavy lean south, not sustainable
5601 Deciduous red alder 7 x dying pg 12,13,14 no no no no recent dead top,in decline
4/8/2021
> 6" considered significant
Layton Tree Consulting LLC
For: PSR Short Plat
Site: 5109 154th Ave NE - Redmond
Redmond On-Site Removed Tree Table
Date:
Landmark
Specific Photo # Exception
Tree/ Evergreen or Tree Healthy Fair Dead or If photo of Meets Significant Meets Landmark Retained Request
Tag # Deciduous Species DBH Dying tree provided Tree Classification? Tree Classification? yes/no Required? Notes
4/8/2021
> 6" considered significant
5629 Deciduous red alder 10 x decline pg 12,13,14 no no no no not sustainable
5630 Deciduous red alder 7 x decline pg 12,13,14 no no no no not sustainable
5600 Deciduous Scoulers willow 14 x dying pg 12,13,14 no no no no dead top, 50% dead
5602 Deciduous red alder 7 x dying pg 12,13,14 no no no no broken, 90% dead
5603 Deciduous red alder 6 x dying pg 12,13,14 no no no no broken, 90% dead
5626 Deciduous red alder 11 x dying pg 12,13,14 no no no no recent dead top,in decline
5625 Deciduous red alder 7 x decline pg 12,13,14 no no no no not sustainable
5624 Deciduous red alder 8 x dying pg 12,13,14 no no no no recent dead top,in decline
5623 Deciduous red alder 8 x decline pg 12,13,14 no no no no not sustainable
5621 Deciduous bitter cherry 8 x decline pg 12,13,14 no no no no poor form, not sustainable
5620 Deciduous apple 15 x pg 12,13,14 yes no no no leans east, surrounded by dense brush
5619 Deciduous red alder 12 x dying pg 12,13,14 no no no no major suscald damage, decline
5618 Deciduous red alder 12 x decline pg 12,13,14 no no no no not sustainable
5617 Deciduous red alder 13 x decline pg 12,13,14 no no no no not sustainable
5075 Deciduous bigleaf maple 11 x yes no no no typical cluster, decent vigor
17
16
1 this includes the one Landmark tree
Total Requested for Removal 8 of the 17 are within the
Total Significant Trees (6" - 29") proposed new public ROW
Total Landmark Trees (30"+)
D R 0 4 6
Many development projects
include trees that are required to
be protected. The City requires
that these saved trees remain
undisturbed during construction
activities. In order to ensure
protection of these trees, barriers
must be placed around trees to
assure their protection. Protective
barriers establish a barrier around
tree drip lines to protect root
z o n e s f r o m d a m a g e b y
construction activities.
Installation of the protective
barrier must precede site
development. These protective
barriers are commonly a durable
orange plastic and latticed fencing
material. However, they may be
any chain link or polyethylene
laminar type material. The
protective barriers must be at
least 4 feet in height and placed 5
feet beyond the drip line of trees
to be protected.
The drip line is determined by the
furthest points of tree foliage.
From these points, the 5-foot
buffer is delineated.
The figures to the right best
illustrate the relationship of the
drip line, buffer, and protective
fencing location.
How should I place tree protection barriers?
T r e e P r o t e c t i o n B a r r i e r s
08/2012
Questions: 425-556-2494 or [email protected].
You can also visit us in person at the Development Services Center located on the 2nd
floor of City Hall. Open Monday through Friday from 8 am to 5 pm.
Development Services Center
15670 NE 85th St PO BOX
97010 Redmond, WA 98073
Applicable Code Sections
RCZ 21.72.070: Tree Protection Measures
Permitted Activities within a
Protective Barrier
Sidewalks and utilities may be
located within the drip line of a
protected tree, provided that
construction methods and
materials used will result in
minimal disruption to tree roots,
and that additional measures for
tree protection are proposed
which will ensure the long-term
viability of the tree.
Minor alteration of grades within
the protected area may be
permitted. Applicants must
submit an evaluation conducted
by a certified arborist which
demonstrates that the proposed
construction will not reduce the
long-term viability of the tree.
Structures may extend into the
drip line buffer only if they are
fully elevated above the ground
within the 5-foot buffer. All other
structures, infrastructure, and
construction activities not
exempted are prohibited within
the protective barriers.