HomeMy WebLinkAboutTR_Arborist_Report_210529_V1ARBORIST REPORT
PREPARED FOR: Long D. Nguyen
PREPARED BY: Root Down Consultants, LLC
PROJECT SITE LOCATION: 2309 Aberdeen Ave N, Parcel 334390-1963
Renton, WA 98056
DATE: May 7, 2021
INTRODUCTION
The project plan is to subdivide the property and to construct 3 single-family homes. The property owner has
retained Root Down Consultants to conduct tree inventory and evaluate tree preservation and tree replacement
with the proposed site plan pursuant to the requirements in the City of Renton Municipal Code, Section
4-4-130 Tree Retention and Land Clearing Regulations.
PROJECT SITE
The project site is a single parcel (36,394 SF or 0.84 AC according to King County Parcel Data), within a
residential neighborhood zoned R-8. The project site has no remaining built structures and contains remnant
foundation plantings and many large mature conifers.
SITE CONDITION & TREE EVALUATION
All plant material was assessed on the property according to the Renton Municipal Code (RMC) and the trees
found on site are majority conifers, primarily Douglas-Fir (Pseudotsuga menziesii).
All trees equal to or greater than 6-inches DBH or Alder and Cottonwood equal or greater than 8-inch DBH
were inventoried according to the Renton Municipal Code (RMC). A total of 28 trees were found of this type
between the provided tree survey and field assessment.This tree total includes 3 trees that are located on a
neighboring parcel (#1334390-1960) as they are in close proximity and will be impacted from construction
activity.
The field assessment determined that of the 28 total trees, 3 are in poor condition and are not healthy trees.
Of these, two are Prunus species (Tree ID’s 1927,1928) that have been topped and/or are in poor form with
significant dieback and one is a 28-in dbh Douglas-Fir (Tree ID 1914) that is unhealthy and is likely in
terminal decline with notable bark damage and heavy sap streams potentially caused by insects - removal is
recommended. Of these 28 trees, 15 are classified as landmark (defined as trees 30” dbh or greater)and 13
are classified as significant (defined as trees 6”dbh or greater or 8” dbh for Cottonwood and Alder).
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TREE DENSITY & RETENTION CALCULATIONS
RMC 4-4-130.C.9 requires a tree density based on each subdivided parcel size. RMC 4-4-130.H.1 requires
30% retention of significant trees.
LOT A
MINIMUM TREE DENSITY REQUIRED
MINIMUM NUMBER OF TREES = (LOT AREA/5000 SF) X 2
LOT AREA (SF):13242
REQUIRED NUMBER OF SIGNIFICANT TREES:5
OR THE GROSS EQUIVALENT CALIPER INCHES (6"x5):30
RETAINED TREE DENSITY
GROSS RETAINED CALIPER INCHES:0
RETAINED SIGNIFICANT TREES:0
RETAINED LANDMARK TREES:0
TOTAL RETAINED TREES:0
REMOVED TREE DENSITY
GROSS REMOVED CALIPER INCHES:331
REMOVED SIGNIFICANT TREES:8
REMOVED LANDMARK TREES:6
TOTAL REMOVED TREES:14
TREE RETENTION PERCENTAGE PERCENT
REQUIRED TREE RETENTION:30%
PLANNED TREE RETENTION:0%
LOT B
MINIMUM TREE DENSITY REQUIRED
MINIMUM NUMBER OF TREES = (LOT AREA/5000 SF) X 2
LOT AREA (SF):10680
REQUIRED NUMBER OF SIGNIFICANT TREES:4
OR THE GROSS EQUIVALENT CALIPER INCHES (6"x4):24
RETAINED TREE DENSITY
GROSS RETAINED CALIPER INCHES:0
RETAINED SIGNIFICANT TREES:0
RETAINED LANDMARK TREES:0
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TOTAL RETAINED TREES:0
REMOVED TREE DENSITY
GROSS REMOVED CALIPER INCHES:219
REMOVED SIGNIFICANT TREES:4
REMOVED LANDMARK TREES:3
TOTAL REMOVED TREES:7
TREE RETENTION PERCENTAGE PERCENT
REQUIRED TREE RETENTION:30%
PLANNED TREE RETENTION:0%
LOT C
MINIMUM TREE DENSITY REQUIRED
MINIMUM NUMBER OF TREES = (LOT AREA/5000 SF) X 2
LOT AREA (SF):13301
REQUIRED NUMBER OF SIGNIFICANT TREES:5
OR THE GROSS EQUIVALENT CALIPER INCHES (6"x5):30
RETAINED TREE DENSITY
GROSS RETAINED CALIPER INCHES:0
RETAINED SIGNIFICANT TREES:N/A
RETAINED LANDMARK TREES:0
TOTAL RETAINED TREES:0
REMOVED TREE DENSITY
GROSS REMOVED CALIPER INCHES:145
REMOVED SIGNIFICANT TREES:N/A
REMOVED LANDMARK TREES:4
TOTAL REMOVED TREES:4
TREE RETENTION PERCENTAGE PERCENT
REQUIRED TREE RETENTION:30%
PLANNED TREE RETENTION:0%
NOTE: CALCULATIONS DO NOT INCLUDE 3 REMOVED TREES ON NEIGHBORING PARCEL
Of the 28 removed trees, 15 are landmark status.Per RMC 4-4-130.F.2.d, removal of landmark trees may be
granted if the Administrator determines the removal is necessary to achieve a specific and articulable purpose or
goal of this Title. To achieve site plan configuration with site grading, retaining walls, access drive and building
footprints, all trees will be significantly impacted.The 3 trees located on adjacent parcel #1334390-1960 are not
included in retention calculations.
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TREE PLANTING DENSITY REQUIREMENTS
RMC 4-4-130.H.e requires a tree planting density when the required number of protected trees cannot be
retained.
LOT A
(SEE TREE RETENTION WORKSHEET)
REQUIRED NUMBER OF REPLACED TREES:4
TREE REPLACEMENT REQUIREMENTS
CALIPER INCHES (12"X1):48
EQUIVALENT TREES AT 2" CALIPER:24
TOTAL TREES REDUCED 50% WITH ADDITIONAL LANDSCAPING:12
LOT B
(SEE TREE RETENTION WORKSHEET)
REQUIRED NUMBER OF REPLACED TREES:2
TREE REPLACEMENT REQUIREMENTS
CALIPER INCHES (12"X5):24
EQUIVALENT TREES AT 2" CALIPER:12
TOTAL TREES REDUCED 50% WITH ADDITIONAL LANDSCAPING:6
LOT C
(SEE TREE RETENTION WORKSHEET)
REQUIRED NUMBER OF REPLACED TREES:1
TREE REPLACEMENT REQUIREMENTS
CALIPER INCHES (12"X5):12
EQUIVALENT TREES AT 2" CALIPER:6
TOTAL TREES REDUCED 50% WITH ADDITIONAL LANDSCAPING:3
TREE DENSITY TABLE
LOT
LOT SIZE
(SF)
MIN. SIGNIFICANT
TREES REQUIRED NEW TREES
RETAINED
TREES COMPLIANT
A 13242 5 12 @ 2" CALIPER 0 YES
B 10680 4 6 @ 2" CALIPER 0 YES
C 13301 5 5 @ 2" CALIPER 0 YES
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SUMMARY
A total of 28 trees are proposed to be removed. Of these, 3 are located on adjacent property and 15 are
classified as landmark status. No trees are proposed to be retained as all will be significantly impacted to
achieve site plan configuration with site grading,retaining walls, access drive and building footprints.
The City of Renton’s municipal code requires tree replacement when required tree retention is not achieved.
Should you have any questions or concerns, or if I may be of further assistance, please feel free to call or
email.
Sincerely,
C.N. Floreani, ISA PLA
ISA Certified Arborist #PN-8534A
P: (360) 399-6041 | E: rootdownconsultants@gmail.com
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ATTACHMENT 1 - TREE RETENTION/LAND CLEARING (TREE INVENTORY) PLAN
ATTACHMENT 2 - TREE INVENTORY TABLE
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ATTACHMENT 3 - AERIAL PHOTO
King County iMap 2019 aerial photo showing parcel boundary.
ATTACHMENT 4 - RATING CATEGORY TABLE
Assessment of plant condition considers health, structure and form.
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ATTACHMENT 5 - PHOTOS
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ATTACHMENT 5 - CONDITIONS
Express conditions of relying upon and accepting this report. Owner client agrees to the following by
acceptance of or reliance upon this report.
1.Any legal description provided to Root Down Consultants is assumed to be correct. Any titles and
ownerships to any property are assumed to be good and marketable by the owner. No responsibility is
assumed, expressed or implied, for matters legal in character. Any and all property is evaluated as
though free and clear, under responsible ownership and competent management.
2.It is assumed that any property evaluated is not in violation of any applicable codes, ordinances,
statutes, or other governmental regulations, unless otherwise stated.
3.Care has been taken to obtain all information from reliable sources. All data has been verified insofar
as possible; however, Root Down Consultants can neither guarantee nor be responsible for the
accuracy of information from any outside sources.
4.Root Down Consultants shall not be required to give testimony or attend court by reason of this report
unless subsequent contractual arrangements are made,including payment of an additional fee for such
services.
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 person or entity than the person to whom it is addressed, without the prior express
written consent of Root Down Consultants.
7.Neither all nor any part of the contents of this 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 express written consent of the consultant;and in particular as to value conclusions,
identity of the consultant, or any reference to any professional society or institute or to any initialed
designation conferred upon the consultant.
8.This report and values expressed herein represent the opinion of Root Down Consultants, and the
consultant’s fee is in no way contingent upon the reporting of a specified value, a stipulated result,the
occurrence of a subsequent event, nor upon any finding to be reported.
9.Sketches, diagrams, graphs, and photographs in this report, being intended as visual aids, are not
necessarily to scale and should not be construed as engineering or architectural reports or surveys.
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 a visual examination of accessible items without dissection, excavation, probing or coring.
There is no warranty or guarantee, expressed or implied,that problems or deficiencies of the tree,
plant or property in question may not arise in the future.
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11.Any statements, representations, or conclusions offered by Root Down Consultants or its employees
are considered the opinion only of Root Down Consultants, and these statements, representations, or
conclusions do not constitute an express or implied warranty of any kind. To the fullest extent
permitted by law, Root Down Consultants, its officers,employees, and agents shall not be liable for
any direct, special, incidental, or consequential damages under any circumstance whatsoever, whether
arising in tort, or contract, including without limitation breach of contract, willful misconduct, strict
liability, breach of warranty, negligence, error or omission, whether professional or non-professional,
nor for any loss, claim, expense, or damage caused by or arising out of Root Down Consultants’s
observations of any property, or services provided.The sole, only and absolute remedy for this report,
including any errors made in any observations, findings,conclusions, recommendations, or actions by
Root Down Consultants, its officers, directors or employees shall be the refund of the fee paid for this
report. Any damages, including incidental, consequential,special or punitive damages of any kind
are expressly waived by the person or entity accepting this report. The prospective owner and/or
client further agrees that no suit, legal action or claim of any kind shall be asserted against Root
Down Consultants after the earlier of substantial completion of services provided or termination of
services of Root Down Consultants. Root Down Consultants shall not indemnify or hold others
harmless for any loss, claim, expense, or damage arising out of Root Down Consultant’s observations
at the property, or related to services provided.Root Down Consultants accepts no responsibility for
interpretation or opinions offered by any third party.Unless otherwise stated to the contrary herein,
whomever accepts or relies on this report expressly releases Root Down Consultants, its officers,
directors and employees from and of all liability associated with the services provided herein and
associated herewith.
Root Down Consultants further disclaims any liability associated with their efforts for any person or
entities other than the parties to this agreement,whether original or as intended or unintended third
party beneficiaries.
NOTE: There are many conditions affecting a tree’s health and stability, which may be present and cannot be
ascertained, such as root rot, previous or unexposed construction damage, internal cracks, stem rot and more
which may be hidden or otherwise readily ascertainable.Even healthy trees can fail under normal or storm
conditions. The only way to eliminate all risk is to remove all trees within reach of all targets. Annual
monitoring by an ISA Certified Arborist will reduce the potential of tree failures. It is impossible to predict
with certainty that a tree will stand or fail, or the timing of the failure. It is considered an ‘Act of God’ when a
tree fails, unless it is directly felled or pushed over by a person’s actions.
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