15920 72ND AVE W.PDFIIIIIIIIIIII
5592
15920 72ND AVE W
Ave. W
STREET FILE
Memo
To: Hiatt, Chuck
From: Timbrook, Dave
CC: Lindsay, Rich
Date: October 7, 2010
Re: Maple on 72nd W. & North Meadowdale Beach Road
This narrative is a follow-up to the "Hazard Tree Evaluation Form" for the tree
in the lot at 72"d Avenue West and North Meadowdale Beach Road.
The tree is located in the Right -Of -Way N.M.B.R. along approximately 30 feet
west of 72"d Ave. W. and is a Bigleaf Maple (Acer macrophyllum) approximately 75
feet tall with a canopy spread of about 55 feet. There are 2 main trunks to this tree.
One trunk is 21" and the other is 20".
The health of the tree is good with normal leaf color and growth. New twig
growth is also normal and there is a minimal amount of dead branches or twigs.
The main concern with this tree is the loss of a major scaffolding branch off the
20" trunk. The branch failed 15' above the base and this failure split the trunk. When
the failure occurred it removed Y2 of the diameter of the trunk for 5 feet before
snapping off. The next 5 feet down has split through the entire diameter if the trunk.
The loss of this branch has put more weight on the branches of the tree that hang
over the street putting more stress on the second trunk.
To reduce the possibility of the failure of this 20" trunk removal of the branches
over the roadway is recommended. This reduction of weight should reduce the
possibility of failure in the future.
Dave Timbrook ISA cent. #PN1199A
A Photographic Guide to the Evaluation of Hazard Trees in Urban Areas
Client/Agency: TREE.HAZARD EVALUATION FORM 2ndEdition
Site/Address: 77- "t-� �„�. A&"-r HAZARD RATING
Map/Location: _ Re-pey5 + Z + -7 y
Section: Sequence: Failure + Size + Target = Hazard `
Owner: public %� private unknown other !` `! Potential of Part Ratinq Ratinq
Date: /D _ Inspector: �� �� •-\.' I� Immediate action needed
Date of last inspection: I Needs further, inspection
u Dead, tree
TREE CHARACTERISTICS
�� ;
Tree Number: / Species: � / r � � l.vry/ ,�� (,,ylj--
DBH: ZD `r # of trunks: Height: 75 Spread:
Form: generally symmetric CI minor asymmetry `i major asymmetry � stump sprout J stag headed
Crown Class: _ dominant co -dominant I intermediate ❑suppressed
Live crown ratio: q / p Age Class: young . 6mkmature ❑ mature i over-mature/senescent
Pruning history: crown cleaned I I excessively thinned toppedcrown raised ii pollarded ' I crown reduced
flush cuts ❑ cabled/braced r none ❑ multiple pruning events Approx. dates:
Special value:. s imen--�_-4-heritage/historic 1 wildlife [] unusual streett£ee �� screen shade
indigenous +=i protected by gov. agency
i TREE HEALTH
Foliage color: normal ❑ chlorotic !_I necrotic Epicormic? Eli Growth obstructions:
Foliage density: ;normal ❑sparse Leaf size: r normal [! small i -]stakes Ellwires/ties ---signs
Annual shoot growth: `I excellent 1 aaverage poor Twig Dieback? "' i J!cables i Icurb/pavement 117
guards
Woundwood development: _,I excellent average L poor i I none :other:
Vigor class: excellent verage 7� fair E, poor
Major pests/diseases: 76
SITE CONDITIONS
Site character: ❑residence ❑commercial ❑ industrial {;'park open space !! 1 natural ` woodland/forest
Landscape type: F parkway raised bed ❑ container ❑ mound ❑ lawn ❑ shrub border _I wind break
Irrigation: r- none ❑ adequate ❑ inadequate ❑ excessive ❑ trunk wetted
Recent site disturbance: ❑ construction soil disturbance ❑ grade change ❑ line clearing ❑ site cleaning
% dripline paved: 0% 25-50% - 50-76% 75-100% Pavement lifted? ❑
dripline w/flll soil: 0% 10-25% 25-50% 50-75% 75-100%
% dripline grade lowered: 0% 25-50% 50-75% 75-100%
Soil problems: ❑ drainage. LI shallow ❑ compacted ❑ droughty E. saline ❑ alkaline acidic
small volume ❑disease center ❑ history of fail ❑ clay ` expansive . slope: ° aspect: _
Obstructions: ❑lights ❑ signage ❑ line -of --sight ❑view ❑overhead lines ❑underground utilities traffic
I? adjacent veg. other:
Exposure to wind: r single tree ❑ below canopy above canopy ❑ recently exposed windward, canopy edge
area prone to windthrow
Prevailing wind direction: Occurrence of snowflce storms: 71 never 7-1'seldom n regularly
TARGET
Use under tree: i_i building []-parking
.1 traffic ❑ pedestrian 7 recreation ( 1 landscape _ hardscape
small features ❑ utility lines
Can target be moved? ❑ Can use be restricted?
Occupancy: 0 occasional use ❑ intermittent use _ (frequent use I' constant use
;Tree #:
TREE DEFECTS
,
Suspect root rot? Mushroom/conklbracket present? ID:
Exposed roots: -1 severe _! moderate ow Undermined: ice; severe ❑: moderate ❑ low
Root pruned: distance from trunk Root area affected: Buttress wounded? `I When:
i Restricted root area: -1 severe moderate
erate low Potential for root failure: _severe moderate low
Lean: =/o' deg. from vertical /" natural ❑ unnatural self corrected Soil heaving?
i
Decay in plane of lean? Roots broken? Soil cracking? ❑
Compounding factors: Lean severity: severe ) moderate LJ low
j
DEFECTS: Indicate presence of individual defects and rate their severity (S=severe- M=modarata t=Inw)
?DEFECT '. ROOT CROWN TRUNK
SCAFFOLDS BRANCHES ^
Poor to er
i
Bow,swee i
Codominants/forks
Multiple attachments
Included bark j
Excessive and weight
j M
Cracks/splits i
Hangers
Girdling_
-
I i
Wounds/seam
Decay
Davit
Conks/mushroom/bracket
Bleedin /sa flow
Loose/cracked bark
Nesting hole/bee hive I ,
Deadwood/stubs I I
I L —�
Borers/termites/ants
Cankers/ alls/buris
Previous failure
Jr
;HAZARD RATING
Tree part most likely to fail: eo 11Zl o 7 16 4,!!54 Failure potential: 1 - low; 2 - medium; 3 - high; 4 -,severe
Inspection period: _; annual ❑ biannual 17, other Size of part: 1 - <6" (15 cm); 2 - 6-18" (15-45 cm);
3-18-30" (45-75 cm); 4 - >39' (75 cm)
Failure Potent + 'Size of PaR + Target Rating _ . Hazard Rating Target rating: 1 - occasional use; 2 - intermittent use;
I 2 I -3 I —1 3 - frequent use; 4 - constant use
HAZARD ABATEMENT
Prune: i- remove defective part 2rreduce end weight ❑ crown clean ❑ thin ❑ raise canopy ❑ crown reduce
! restructure ❑ shape
Cable/Brace: Inspect further: ❑ root crown ❑ decay ❑ aerial
Other Maintenance Actions: monitor water 1
❑mulch ❑fertilize El insects/disease anchor
i
❑ cyclic monitor ❑ priority monitor ❑ inspect cable
Remove tree? Replace? ❑ Move target? ❑ Other: j
Effect on adjacent trees: r none ❑ evaluate
Notification: . ❑ owner ❑manager governing agency . Date:
;
COMMENTS
i
CITY OF EDMONDS
PUBLIC WORKS DEPARTMENT FOR INSPECTION CALL Permit
SI.DE.SEWER PERMIT, Ext. Issue DateIV /rj /U
*,PERMIT MUST ,BE POSTED ON JOB SITE
AWA& LYNNWOOD LINE
1. Address of Construction r -1 - .
Pro pert Le al Description (include all easements
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�3. Single Family Residence � Multi Family No. of Units
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Commercial
Owner and/or Builder��/
V-c5. Contractor & License No.
R"6. Invasion into City Right -of -Way: No A"" Yes (If Yes Right -of-
way Construction Permit Required - Call Dial Dig (AI2'104/4') before
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excavation).- -800-454-5555
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7. Cross other private property: Yes No Easement required -
'+
'+
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attach legal description and county easement number.
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READ THE FOLLOWING AND SIGN:
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a. Property owners must obtain a permit to install side sewers on
their property. A licensed side sewer contractor must be employed to
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construct side sewers in the public right-of-way.-
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b. The side sewer contractor assumes full reponsibility for each
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installation for one year.
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C. Commercial establishment requires a minimum of a six inch (6")
side sewer line.
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d. Side sewers may not be installed closer than thirty inches (30")
to any structure.
e. Side sewer lines must be laid at a minimum grade of 2% (1.15°)
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and maximum grade of 100% (45°).
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f. No turn in side sewer greater than 45 (1/8,bend) is°allowed
between cleanout. All 90 turns must be constructed of a 45 (1/8
bend) and wye with removable cap.
g. No down spouts, footing drains or floor drains can be connected
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to side sewer system.
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h. Pea gravel is required for bedding when installing sewer lines
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through other than granular soil.
i. Cleanouts are required at 30"-60" from each plumbing exit line
and at minimum intervals of 100' along sewer line run.
j. Trenches within City right-of-way must be restored to original
conditions. Contractors shall be responsible for right-of-way failure
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due to poor compaction of fill.
k.. Side sewer must be left uncovered until inspected and approved
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by the City.
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1. Inspection during normal working hours only. Two working
days; notice recT uiirr d.
DATE: Ste/
��I certiff t at I--hav6 read ,
and shall compi�y�with the above
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PERMIT FEE: ~j Sco DISAPPROVED By: Date:
Date : t
o .CONNECTION FEE: APPROVED By• Date: ?
SEE t4wr6
W * PERMIT MUST BE POSTED ON JOB SITE * ''
Side Sewer Drawing
•
The City of Edmonds
EASEMENT NO .
MEM . CONN .
............................... .
NEW CONSTRUCTION ❑ REPAIRS ❑
LID NO. ------ ASMT. NO . --------- .........f
OWNER G1.vNN------M--•--.LQL-�C7-unGE-R------------------------------
CONTRACTOR �.T�C� F�t�_ST-------------------
-----------------•--- PERMIT NO. SU�
JOB ADDRESS 15°920_..._._72."1D__Av __
W__________________
LEGAL DESCRIPTION: LOT NO.--------------------------------------
BLOCK NO. _ .ON14WOOD-11NE
G' STus WPS INGORREc--TL.`9 INSTAL.L6D AT MPTH SHOWN.-------•----•------•-------•------•--••---•--....--•--••----------------••-------•----•-•---•----•------•--•------------•-------
----------------------••-•-------
I ASSISTEo GLEPaj 4 PETE W ITH GRpm AD3.
To INSURE FALL THROUGHOUT LINE• APPR6x.l"Fe^10'
NAME OF ADDITION.........................................................................
SIpE$ewrQ CLEANING AssisTANc.E, SHOULD BE
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aFP RcZ IF GRADE PRog1CM ARISES.
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6" c.o.waE
C.o.GAP 1'DV.
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PWW-0001-11/75 (REVA1/78)