HomeMy WebLinkAbout24_Arborist Report.pdfAppraisal and Appraisal Review Services
Forest Practices Consulting, Forest Management
Timber Cruising & Marketing Services, Arboricultural Services
S. A. NEWMAN FIRM
(incorporated as S.A. Newman, Forest Engineers, Inc.)
Established 1946
Offices: 3216 Wetmore Avenue, Suite 205, Everett, WA 98201-4368
Mail: P. O. Box 156, Everett WA 98206-0156
Phone 425-259-4411; Facsimile 425-2584435
Web: www.sanforest.com
January 16, 2017
SUMMi4RY TREE INVENTORY REPORT
Meadowvue Project in a Portion
of the NE �/ SW �/ of Section 14, Township 23 North
Range 5 East, W.M., City of Renton,
King County, Washington
Overview: This report serves to provide an inventory and summary analysis of
trees proposed for retention or removal on the Meadowvue project site and to comply
with standards established under RMC 44-130. Our client D. R. Horton provided to
the undersigned a copy of a Boundary & Topographic Survey map dated December 1,
2016 prepared by Axis Surveying & Mapping. This map depicted various on-site trees
and was a supporting reference for this inventory. The undersigned inspected the
subject property on November 16, 2016 and again on January 13, 2017. The
inventory includes all on-site trees considered to be potential "significant trees" as
defined under RMC 4-11-200 (Definitions T) — and includes any tree with a caliper of
at least six inches (6"), or an alder or cottonwood tree with a caliper of at least eight
inches (8"); except that trees qualified as dangerous shall not be considered
significant. Summary qualitative and quantitative data were collected for the
inventoried trees to provide a basis for determining suitability for retention. Trees
determined to be unsuitable for retention on-site were identified based on a visual
assessment only, and this type of analysis is referred to as a level I assessment as
defined in the Tree Risk Assessment Manual°, (International Society of Arboriculture,
Martin Press, 2013). A level 1 assessment is typically used as an expeditious method to
identify trees with high likelihood or imminent threat of near-term partial or whole tree
failure. Upon inspection the undersigned found that most on-site trees had been
previously marked on-site with a numbered aluminum tag, and these numbers were
adopted for reporting purposes. Two trees with numbered tags were below the size
threshold to be considered significant, but were included in this inventory for
disclosure. A few other trees mapped on the survey which were not tagged and were
also below the size threshold were excluded from this inventory. Also a few significant -
sized trees which were not
DR Hortn.Meadowvue.1701 1 S. A. Newman Firm
Meadowvue
January 16, 2017
mapped were included in this inventory. An annotated version of the Axis survey map
with revisions by the undersigned arborist and tag numbers assigned by tree appears
as Exhibit 3 of this report.
Site Conditions: The project site is level very slightly sloping, with moderately
well drained Alderwood gravelly sandy loam soil. Water permeability is rated
moderately rapid above hardpan, with a seasonally perched water table at between
18" to 36" generally between January and March. The available water capacity is
rated as low, with an effective tree rooting depth of 20" to 40" for, and tree windthrow
hazard is rated as moderate. (source: USDA Natural Resources Conservation Service
— Web Soil Survey: https://websoilsurveV.nres.usda.gov/appNVebSoilSurvey.aspx)
Tree Summary: All trees tallied as part of Meadowvue inventory are
summarized as follows:
Significant Trees Potentially Suitable for Retention: 27
Trees Unsuitable for Retention Due to Decay or
Structural Defects: 7
Two Undersized & One Dead -- Trees Tagged &
Mapped and Included in Tally for Disclosure Purposes Only: 3
Total Inventoried Trees: 37
The inventoried trees are more fully detailed in Exhibit 1 & 2 attached hereto.
One of the trees considered unsuitable for retention is bigleaf maple no. 7358 which
has extensive decay in the basal portion of the bole stem. Many of the larger on-site
bigleaf maple also have limited decay and exhibit obvious mechanical damage in
basal portions of the bole presumably from equestrian use of the site for many
decades, but were considered sound enough for potential retention on-site and thus
considered significant trees despite horse damage.
Six of the trees considered unsuitable for retention are Lombardy poplar nos.
9001 through 9006. A seventh Lombardy poplar no. 9007 is dead. All the on-site
Lombardy poplar were severely "topped" many years ago and now only 12 to 14 foot
high "stumps" remain, but with varying amounts of regenerated branch sprouts. Even
when in relatively good condition Lombardy poplar are a non-native species generally
rated as a "high failure risk" in some literature, are notorious for rapid advance of any
internal decay, exhibit frequent limb loss in high wind, and eventually are prone to
whole tree failure when over -mature. In addition Lombardy poplar are especially
susceptible to certain cankers and fungal infections. Moreover, the on-site Lombardy
poplar are already at an advanced age and have been mutilated via extreme topping.
DR Hortn.Meadowvue.1701 2 S. A. Newman Firm
Meadomue
January 16, 2017
In the opinion of the undersigned the Lombardy poplar are not salvageable via
restorative pruning, and any branch sprouts allowed to attain significant size will be
poorly attached to the main bole stem, and will have a high likelihood of failure.
*I O
x`01 •r4
044
tt01 #11
rr.u�
NJ fA
Look at east side of 30" DBH
bigleaf maple no. 7358 decayed
to the extent that you can see
through the basal area and
forest litter on west side of tree is
visible behind tree in this photo.
43' DBH Western red cedar no.
7357 visible at left in
background.
This report is an inventory only and trees considered suitable for retention
onsite are subject to appropriate protection during construction. Another project party
is reportedly calculating applicable tree retention and/or replacement. The undersigned
reserves the right to review the tree protection plans (if any) developed for on-site
construction and saved trees. Any deviation from the conditions of approval for site
activities by City of Renton or any failure to comply with the minimal ISA standards for
the preservation of trees during construction could result in a revised recommendation
DR Hortn.Meadowvue.1701 3 S. A. Newman Firm
Meadomue
January 16, 2017
46" DBH bigleaf maple no. 7386
with mechanical damage at base
presumably from horses --
considered potentially suitable
for retention despite damage.
for retention or removal. The risk of tree failure is relative, and such a risk therefore
exists even for the least hazardous trees recommended to be retained and/or
monitored. Changes in circumstances, condition and tree size can also lead to a
change in tree status, tree deterioration and potentially result in instability. In the
opinion of the undersigned, low to moderate risk of failure only exists for the near-term
for on-site trees considered potentially suitable for retention. Monitoring is always
warranted during and to some extent after construction. The undersigned assumes
that little if any soil disturbance will occur within prescribed critical root protection
zones surrounding the trees proposed for retention. The undersigned reserves the
right to revise recommendations for retention trees if significant soil disturbances or
other tree impacts occur are required as part of plat construction which materially
affect trees.
DR Hortn.Meadowvue.1701 4 S. A. Newman Firm
Meadowvue
January 16, 2017
Dead 34" DBH Lombardy poplar
no. 9007 appears in foreground
a right of photo. 36" DBH
Lombardy poplar no. 9006
appears in left -center of photo
behind turkey pen. No. 9006
ssignificant poorly attached
branch sprouts regenerating
from the remaining high stump.
Certification. I certify that: I inspected the trees and property that are the subjects of
this report on various dates indicated herein in 2016 and 2017; the statements of fact
contained in this report are true and correct to the best of my knowledge and belief;
have no present or prospective interest in the trees or property that is the subject of
this report; my services are not contingent on an action or event resulting from the
analyses, opinions, or conclusions in, or the use of, this report; and that the
conclusions set forth in this report are my independent conclusions, and that such
conclusions were reached without collaboration of others except for the professional
assistance as detailed herein. All conclusions were reached without direction as to
recommended action. I have not revealed the findings and results of this report to
anyone other than the client named herein, and our firm will not do so until authorized
in writing by said party or until required to do so by due process of law.
DR Hortn.Meadowvue.1701 5 S. A. Newman Firm
Meadomue
January 16, 2017
The undersigned arborist remains available for additional site review and to
prepare plans for tree protection during construction, for consultation during
construction, and for follow-up steps for monitoring in years following construction if
requested or otherwise engaged. Please feel free to phone me at 425-2594411 (fax
425-25&4435) if you have any questions. Thank you.
Respectfully Submitted,
S. A. NEWMAN FIRM
Peter C. Blansett, Principal Forester/
ISA Certified Arborist No. PN0659A
ISA Qualified Tree Risk Assessor
Email: pblansett@sanforest.com
DR Hortn.Meadowvue.1701 6 S. A. Newman Firm
Exhibit 1
Numeric
Meadowvue Project in a Portion of
Sec. 14 - T23N - R5E, W.M., in
City of Renton, King County, WA
Page 1 of 1
Tree No. Species" DBHb Comments Suitable?
inches Size?'
7134 Flowering cherry 7 multi -stemmed Y
7135 Flowering cherry 8 multi -stemmed Y
7136 Flowering cherry 9 multi -stemmed Y
7141 Leyland cypress 18 Y
7142 Leyland cypress 10 Y
7143 Leyland cypress 12 Y
7144 Leyland cypress 10 Y
7145 Leyland cypress 7 Y
7146 Leyland cypress 8 Y
7147 Leyland cypress 10 Y
7148 Leyland cypress 6 Y
7152 Fruit cherry 8 multi -stemmed Y
7153 Fruit apple 3 multi -stemmed N
7154 Fruit cherry 5 multi -stemmed N
7178 Hawthorne 9 multi -stemmed Y
7281 Bigleaf maple 60 multi -stemmed Y
7310 Bigleaf maple 43 Y
7356 Bigleaf maple 10 multi -stemmed Y
7357 Western red cedar 43 Y
7358 Bigleaf maple 30 multi -stemmed; major decay; unsuitable for retention N
7386 Bigleaf maple 46 Y
7389 Bigleaf maple 34 multi -stemmed Y
7417 Bigleaf maple 21 Y
7420 Bigleaf maple 12 multi -stemmed Y
7427 Western red cedar 46 Y
7428 Bigleaf maple 45 Y
9001 Lombardy poplar 22 Topped-- 12 to 14' high resprouting stump; unsuitable for retention N
9002 Lombardy poplar 26 Topped-- 12 to 14' high resprouting stump; unsuitable for retention N
9003 Lombardy poplar 24 Topped -- 12 to 14' high resprouting stump; unsuitable for retention N
9004 Lombardy poplar 24 Topped-- 12 to 14' high resprouting stump; unsuitable for retention N
9005 Lombardy poplar 30 Topped-- 12 to 14' high resprouting stump; unsuitable for retention N
9006 Lombardy poplar 36 Topped-- 12 to 14' high resprouting stump; unsuitable for retention N
9007 Lombardy poplar 34 Topped-- 12 to 14' high dead stump; unsuitable for retention N
9996 Unknown deciduou 12 multi -stemmed Y
9997 Unknown deciduou 10 multi -stemmed Y
9998 Bigleaf maple 6 multi -stemmed Y
9999 Bigleaf maple 10 multi -stemmed Y
Prepared by Peter C. Blansett, ISA Certified Arborist No. PN0659A
a Western red cedar =Thuja plicata; Leyland cypress = X Cuppressocyparis leylandii; Bigleaf maple =Acer
macrophyllum; hawthorne = Crataegus laevigata; Cherries =Prunus spp.; Apple = Malus spp.
b DBH means diameter at breast height - a standard point of measurement 4.5 feet above grounf level as measurE
on uphill side of tree.
Trees denpoted "N" are either unsuitable for retention due to serious decay or strutural defects; or were marked
on-site with a numbered aluimnium tag and shown on Boundary & Topographic Survey but are too small to be a
significant tree as defined under RMC 4-11-200.
DR Horton.Meadowvue.1701 S. A. NEWMAN FIRM
Exhibit 2
Sorted
Meadowvue Project in a Portion of
Sec. 14 - T23N - R5E, W.M., in
City of Renton, King County, WA
Page 1 of 1
Tree No. Species DBH Comments Suitable?
inches Size?
7358 Bigleaf maple 30 multi -stemmed; major decay; unsuitable for retention N
7153 Fruit apple 3 multi -stemmed N
7154 Fruit cherry 5 multi -stemmed N
9001 Lombardy poplar 22 Topped-- 12 to 14' high resprouting stump; unsuitable for retention N
9002 Lombardy poplar 26 Topped -- 12 to 14' high resprouting stump; unsuitable for retention N
9003 Lombardy poplar 24 Topped -- 12 to 14' high resprouting stump; unsuitable for retention N
9004 Lombardy poplar 24 Topped -- 12 to 14' high resprouting stump; unsuitable for retention N
9005 Lombardy poplar 30 Topped-- 12 to 14' high resprouting stump; unsuitable for retention N
9006 Lombardy poplar 36 Topped-- 12 to 14' high resprouting stump; unsuitable for retention N
9007 Lombardy poplar 34 Topped -- 12 to 14' high dead stump; unsuitable for retention N
7281 Bigleaf maple 60 multi -stemmed Y
7310 Bigleaf maple 43 Y
7356 Bigleaf maple 10 multi -stemmed Y
7386 Bigleaf maple 46 Y
7389 Bigleaf maple 34 multi -stemmed Y
7417 Bigleaf maple 21 Y
7420 Bigleaf maple 12 multi -stemmed Y
7428 Bigleaf maple 45 Y
9998 Bigleaf maple 6 multi -stemmed Y
9999 Bigleaf maple 10 multi -stemmed Y
7134 Flowering cherry 7 multi -stemmed Y
7135 Flowering cherry 8 multi -stemmed Y
7136 Flowering cherry 9 multi -stemmed Y
7152 Fruit cherry 8 multi -stemmed Y
7178 Hawthorne 9 multi -stemmed Y
7141 Leyland cypress 18 Y
7142 Leyland cypress 10 Y
7143 Leyland cypress 12 Y
7144 Leyland cypress 10 Y
7145 Leyland cypress 7 Y
7146 Leyland cypress 8 Y
7147 Leyland cypress 10 Y
7148 Leyland cypress 6 Y
9996 Unknown deciduou 12 multi -stemmed Y
9997 Unknown deciduou 10 multi -stemmed Y
7357 Western red cedar 43 Y
7427 Western red cedar 46 Y
Prepared by Peter C. Blansett, IS
Certified Arborist No. PN0659A
a Western red cedar =Thuja plicata; Leyland cypress = X Cuppressocyparis leylandii; Bigleaf maple =Acer
macrophyllum; hawthorne = Crataegus laevigata; Cherries =Prunus spp.; Apple = Malus spp.
b DBH means diameter at breast height - a standard point of measurement 4.5 feet above grounf level as measurE
on uphill side of tree.
Trees denpoted "N" are either unsuitable for retention due to serious decay or strutural defects; or were marked
on-site with a numbered aluimnium tag and shown on Boundary & Topographic Survey but are too small to be a
significant tree as defined under RMC 4-11-200.
DR Horton.Meadowvue.1701 S. A. NEWMAN FIRM
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