HomeMy WebLinkAboutEX04_Arborist ReportA&MTree ServlCe NW, Inc.
December 10, 2019
RE: Tree Inventory and health assessment
For: Mahal Short Plat
Location of tree(s): 13436 156th Ave SE
Renton, WA 98059
Parcel #: 3664500280
Date of site visit: December 4, 2019
Scope of Work
Inventory and health assessment of all trees on the property.
Qualifications
I am an ISA Certified Arborist as well as a Qualified Tree Risk Assessor and Environmental
Habitat Specialist. I am also a member of the ASCA and actively involved with the Pacific
NW Chapter of ISA. These affiliations from the International Society of Arboriculture (ISA)
and the American Society of Certified Arborists (ASCA) qualifies me to assess the risk of
tree(s). I have nearly 20 years of experience both in trees and in varying classes that are
required to maintain and advance my certification. I have over 10 years' experience with
the care for trees during and after construction.
Limits of Assignment
Unless stated otherwise: 1) information contained in this letter covers only those trees that
were examined and reflects the condition of those trees at the time of inspection; and 2)
the inspection is limited to visual examination of the subject trees without dissection,
excavation, probing, climbing, or coring unless explicitly specified. There is no warranty or
guarantee, expressed or implied, that problems or deficiencies of the subject trees may not
arise in the future.
**See additional assumptions and limiting conditions in Appendix A attached.
Arborist Inventory for Mahal Short Plat
Prepared by Mike Morey Jr. PN-6934A Tree Risk Assessor
A&MTree Service NW, Inc.
Methods for Tree Evaluation
We evaluate tree health and structure utilizing visual tree assessment (VTA) methods. The
basis behind VTA is the identification of symptoms, which the tree produces in reaction to a
weak spot or area of mechanical stress. A tree reacts to mechanical and physiological
stresses by growing more vigorously to re -enforce weak areas, while depriving less
stressed parts. (Mattheck & Breloer 1994) An understanding of the uniform stress allows
us to make informed judgments about the condition of a tree. Continued education and
ongoing observations onsite where construction is present helps qualify me to assess
current and future health problems. My examination was limited to a visual one, and did
not involve any root excavation, trunk or limb coring, or any soil testing. I followed
protocol delineated by the International Society of Arboriculture (ISA) for Visual Risk
Assessment (VRA). By doing so, I am examining each tree independently as well as
collectively as groups or stands of trees provide stability and can lower risk of independent
tree failure. This scientific process examines tree health (e.g. size, vigor, insect and disease
process) as well as site conditions (soil moisture and composition, the quantity of
impervious surfaces surrounding the tree etc.)
Site history and observations:
The property located at 13436 156th Ave SE, parcel #3664500280 was built in 1943. The
lot size is 29100 with the dwelling being 1430 sgft. Legal description: JANETTS RENTON
BOULEVARD TRS LOT 3 OF K C SHORT PLAT NO 577011 RECORDING NO 7711160735 SD
PLAT DAF - LOT 7 BLK 2 JANETTS RENTON BOULEVARD TRACTS LESS N 95 FT AS MEAS
ALG W LN OF W 220 FT AS MEAS ALG N LN LESS S 95 FT AS MEAS ALG W LN OF W 220 FT
AS MEAS ALG S LN LESS POR THOF LY OUTSIDE ARC OF CURVE BEARING A 25 FT RAD
FORMING SE COR THOF TO K C FOR ROADWAY. It is located on the West side of 156th Ave
SE in Renton which is a highly traveled road in the established neighborhood of
Maplewood Heights.
There is a gravel driveway off of 1561h Ave SE that leads up the south property line to a
detached garage. The main dwelling is located to the north of the driveway. There is a
fenced off area where several dogs reside that runs from the Southwest corner of the
property to the Northwest corner and from the Northwest corner of the house to the north
property line. There is a minor slope up to the main dwelling which evens out to a flat
surface for the majority of the property.
The trees are numbered 1— 8 shown on the attached map.
ANNOLV
Arborist Inventory for Mahal Short Plat
Prepared by Mike Morey Jr. PN-6934A Tree Risk Assessor
A&MTree Service NW, inc.
Inventory
Tree#
Species
DBH
Notes
Viable
Retain
1
Apple
81, 10"
Dead Tree
No
No
2
Apple
10", 12"
Pockets of decay, dead
Yes
No
branches typical of species,
poorly pruned, included
bark with crack
3
Apple
12"
Almost dead
No
No
4
Apple
12"
Poorly pruned, leaning, dead
No
No
wood, decay at root crown.
5
Apple
8",12"
Cavities of decay
No
No
throughout, poorly pruned,
slight lean, decay and cracks
in larger stem with
excessive end weight
6
Lilac
Cluster 2" - 4"
Poorly pruned, hedged on
Yes
No
top and sides dead stems
throughout
7
Lilac
Multi 2" - 4"
Different type of lilac as the
Yes
Yes
cluster next to it, poorly
pruned, topped and shaped
S
Apple
6"
Poorly pruned, dead wood, if
Yes
Yes
retained needs to be pruned
properly
Discussion
The trees on this property are all overly mature fruit trees for the most part. Most are dead
or dying. I would suggest replant of trees in appropriate areas to create a canopy best
suitable for the upcoming development.
Tree Protection Fencing:
Tree Protection fencing should be erected prior to any site grading. First, protect roots that
lie in the path of construction. Approximately 90 to 95 percent of a tree's root system is in
the top three feet of soil, and more than half is in the top one foot. Construction activities
should be avoided in this area. Protect as much of the area beyond the tree's dripline as
Arborist Inventory for Mahal Short Plat
Prepared by Mike Morey Jr. PN-6934A Tree Risk Assessor
A&M Tree Service NW, Inc.
possible. Some healthy trees survive after losing half of their roots. However, other species
are extremely sensitive to root damage even outside the dripline.
Do not disturb the Critical Root Zone (CRZ). The CRZ is defined by its "critical root radius."
It is more accurate than the dripline for determining the CRZ of trees growing in forests or
that have narrow growth habits. To calculate critical root radius, measure the tree's
diameter (DBH) in inches, 4.5 feet above the ground. For each inch, allow for 1 to 1.5 feet of
critical root radius. If a tree's DBH is ten inches, its critical root radius is 10 to 15 feet.
In addition to the CRZ, it is important to determine the Limits of Disturbance (LOD) for
preserved trees. Generally, this approximates the CRZ however in previously excavated
areas around the dripline the LOD may be smaller, or in the case of a tree situated on a
slope the LOD may be larger. The determination of LOD is also subject to the tree species.
Some tree species do better than others after root disturbance.
Tree protection is advised throughout the duration of any construction activities whenever
the critical root zone or leaf canopy many be encroached upon by such activities.
The Critical Root Zone (CRZ) or LOD should be protected with fencing adequate to hinder
access to people vehicles and equipment. Fencing detail is provided. It should consist of
continuous 4 ft. high temporary chain -link fencing with posts sec at 10' on center or
polyethylene laminar safety fencing or similar. The fencing must contain fencing signage
detailing that the tree protection area cannot be trespassed on.
Soil compaction is one of the most common killers of urban trees. Stockpiled materials,
heavy machinery and excessive foot traffic damage soil structure and reduce soil pore
space. The effected tree roots suffocate. When construction takes place close to the
protected CRZ, cover the site with 4 inches of bark to reduce soil compaction
Tree Protection fencing must be erected prior to soil excavation, boring, grading or fill
operations. It is erected at the LOD. If it is necessary to run utilities within the LOD, the
utilities should be combined into one cut, as practical. Trenching is not allowed in the LOD.
In these areas, boring or tunneling techniques should be used. If roots greater than 1"
diameter near the LOD are damaged or torn, it is necessary to hand trim them to a clean
cut. Any roots that are exposed during construction should be covered with soil as soon as
possible.
During drought conditions, trees must be adequately watered. Site should be visited
regularly by a qualified ISA Certified Arborist to ensure the health of the trees. Tree
protection fencing is the last item to be removed from the site after construction is
completed.
After construction, has been completed, evaluate the remaining trees. Look for signs and
symptoms of damage or stress. It may take several years for severe problems to appear.
If fencing around portions of the CRZ of a tree to be retained are not practical to erect due
to construction or obstacles, tree protection fencing should be placed three feet laterally
from the obstruction (ex. three feet back of a curb, building, or other existing or planned
permanent infrastructure.
Arborist Inventory for Mahal Short Plat
Prepared by Mike Morey Jr. PN-6934A Tree Risk Assessor
A&M Tree Service NW, Inc.
Thank you for the opportunity to help you with your properties tree's needs. Please let me
know if you have any questions about the above inventory or if there is anything you would
like me to
add or investigate further.
Sincerely,
Michael A Morey Jr.
A & M Tree Service NW, Inc.
ISA Certified Arborist
#PN-6934A tSA
Qualified Tree Risk Assessor
Office: 425-867-2307
Arborist Inventory for Maui Short Plat
Prepared by Mike Morey Jr. PN-6934A Tree Risk Assessor
A&MTree Service NW, Inc.
Assumptions and Limiting Conditions
1. Any legal description provided to the consultant/appraiser is assumed to be correct. Any titles
and ownerships to any property are assumed to be good and marketable. No responsibility is
assumed for matters legal in character. Any and all property is appraised or evaluated as thou
free and clear, under responsible ownership and competent management.
2. It is assumed that any property is not in violation of any applicable codes, ordinances, statutes
or other governmental regulations.
3. Care has been taken to obtain all information from reliable sources. All data has been verified
insofar as possible; however, the consultant/appraiser can neither guarantee nor be
responsible for the accuracy of information provided by others.
4. The consultant/appraiser shall not be required to give testimony or to attend court by reason
of the report unless subsequent contractual arrangements are made including payment of an
additional fee for such services as described in the fee schedule and contract of engagement.
5. Loss or alteration of any part of this report invalidates the entire report.
6. Possession of this report or a copy thereof does not imply right of publication or use for any
purpose by any other than the person to whom it is addressed, without the prior expressed
written or verbal consent of the consultant/appraiser.
7. Neither all nor any part of the contents of the report, nor copy thereof, shall be conveyed by
anyone, including the client to the public through advertising, public relations, news, sales or
other media, without the prior expressed written or verbal consent of the consultant/appraiser
- particularly as to value conclusions, identity of the consultant/appraiser, or any reference to
any professional society or instate or to any initialed designation conferred upon the
consultant/appraiser as stated in her qualification.
8. The report and any values expressed herein represent the opinion of the consultant/appraiser,
and the consultant's/appraiser's fee is in no way contingent upon the reporting of a specified
value, a stipulated result, the occurrence of subsequent event, nor upon any finding to be
reported.
9. Sketches, diagrams, graphs and photographs in this report, being intended as visual aid, are
not necessarily to scale and should not be construed as engineering or architectural reports or
survey.
10. Unless expressed otherwise: 1) information contained in this report covers only those Items
that were examined and reflects the condition of those items at the time of inspection; and 2:
the inspection is limited to visual examination of accessible items without dissection,
excavation, probing or coring. There is not warranty or guarantee, expressed or implied, that
problems or deficiencies of the plants or property in question may not arise in the future.
Arborist Inventory for Mahal Short Plat
Prepared by Mike Morey Jr. Ply-6934A Tree Risk Assessor
A&MTree Service NW, Inc.
AAL
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Arborist Inventory for Mahal Short Plat
Prepared by Mike Morey Jr. PN-6934A Tree Risk Assessor