20728 76TH AVE W (2).PDF6104
20728 76TH AV W
ADDRESS: 7,
TAX ACCOUNT/PARCEL NUMBER:
BUILDING PERMIT (NEW STRUCTURE):
COVENANTS (RECORDED)
CRITICAL AREAS: DETERMINATION: 0 Conditional Waiver 0 Study Required aiver
,<W
DISCRETIONARY PERMIT #'S:
DRAINAGE PLAN DATED:
PARKING AGREEMENTS DATED:
EASEMENT(S) RECORDED FOR:
PERMITS (OTHER):
PLANNING DATA CHECKLIST DATED: �A-lk(?
SCALED PLOT PLAN DATED:
SEWER LID FEE
SHORT PLAT FILE:
SIDE SEWER AS BUILT DATED:
SIDE SEWER PERMIT(S) #:
SOILS REPORT DATED:
I
STREET USE / ENCROACHMENT PERMIT #:
WATER METER TAP CARD DATED:
OTHER:
LID #:
LOT: BLOCK:
LATEMP\DST's\Forms\Street File Checklist.doc
.4 C. 1 %9-
#.P20
City of Edmonds
Development Services Department
Plannm*g Division
Phone: 425.771.0220
Fax: 425.771.0221
The Critical Areas Checklist contained on this form is to
be filled out by any person preparing a Development
Perimit Application.for the City of Edmonds prior to
his/her submittal of the application to the City.
The purpose of the Checklist is to enable City staff to
determine whether any potential Critical Areas are, or
may be, present on the subject property. The information
needed to complete the Checklist ..should be easily
available from observations of the site or data available at
City Hall (Critical areas inventories, maps, or soil
surveys)-
16. .
DateReceived: 1�10/019
City Receipt#:
. Critica I Areas File#: r1AN - 3,00 g- 00
Critical Areas Checklist Fee: $f35.00
Date Mailed to Applicant:
A property owner, or his/her authorized representative,
must*fill out the checklist, sign and date it, and submit it
to the City. The City will review the checklist, make a
precursory site visit and make a determination of the
subsequent steps necessary to complete a development
permit application.
Please submit a vicinity map, along with the signed copy
of this form to assist City staff in finding and locating the
specific piece of property described on this form. In
addition, the applicant shall include other pertinent
information (e.g. site plan, topography map, etc.) or
studies in conjunction with this Checklist to assistant staff
in completing their preliminary assessment of the site.
The undersigned applicant, and his/her/its heirs, and assigns, in consideration on the processing of the application agrees
to release, indenmify, defend and hold the City of Edmonds harmless from any and all damages, including reasonable
attorney's fees, arising from any action or infi-action based in whole or part upon false, misleading, inaccurate or
incomplete information fumished by the applicant, his/her/its agents or employees.
By my signature, I certif� that the i�:, �t wi
,�ion nd exhibits here 'th submitted are true and correct to the best of my
knowledge and that I am authorized to le _ ation on the behalf of the owner as listed below.
p ic
SIGNATURE oF APPLicANT/AGENT DATE
Property Owner's Authorization V
By my signature, I certify that I have authorized the above Applicant/Agent to apply for the subject land use application,
and grant my permission �ortfi�epublic officials and the staff of the City of Edmonds to enter the subject property for the
purposes of inspection and pos
. )1,a"ttendanoo 4s application.
SIGNATURE OF OWNER
Own.er/Applicant:
Njr.d��-1 &UIXIIA
Name
& -A 03 AC)2-
Street Address
State Zip
Telephone: W,�;— - --_-7-
DATE /
A plicant Representative:
Ta Lt r-,
Name ef-Zll (!�:-
20 /743 �4 S 4-V
Street Address
91
City State zip
Telephone: lijq- �g
Email address (optional): e NO �etvbylldl, mail Address (optional):
I/
#P20 CA File No:
Critical Areas Checklist
,Site Information (soils/ topography/hydrol�T/vegetation)
1. Site Address/Location:
2. Property TaxAccount Number: f q 30 0 0 0 10 (0 CD
3. Approximate Site Size (acres or square feet)- F i
4. Is this site currently developed? yes; no.
If yes; how is site developed?. 10-h't a Lei! L1,111 L4, aA
5. Describe the general site topography. Check all that apply.
Flat less than 5-feet elevation change over entire site..
Rolling: slopes on
site generally less than 15% (a vertical rise of 10-feet over a horizontal.
distance of 66-feet).
Hilly: slopes present on site of more than 15% and less than 30% (a vertical rise of 10-feet
over. a horizontal distance of 33 to 66-feet).
Steep: grades of greater than 30% present on site (a vertical rise of 10-feet over a horizontal
distance of less than 33-feet).
Other (please describe):
6. Site contains areas of year-round standing water: Approx. Depth:
7. Site contains areas of seasonal standing water: Approx. Depth:
What season(s) of the year?
8. Site is in the floodway floodolain of aw.ater course.
9. Site contains a creek or an area where water flows across the grounds surface? Flows are year-round?
7JA -Flows are seasonal? (V4hat time of year?
I _V
10. Site is primarily: forested meadow shrubs mixed
urban landscaped (lawn, shrubs etc)
11. Obvious wetland is present on site:
I-or City Staff Use Only
1. Plan Check Num
2. Site is Zoned? t
3.
4.
5.
SCS mapped soil
Critical Areas inventory or C.A. map indicates Critical Area on site? A4�
Site within designated earth subsidence landslide hazard area? /40
DETERMINATION
STUDY REQUIRED WAIVER
Reviewed bv.-
LIU & ASSOCIATES, INC.
Geotechnical Engineering
Mr. Bob Murphy
Murphy Building Company
P. 0. Box 3284
Everett, WA 98203
Engineering Geology
April 27, 2008
Dear Mr. Murphy:
Subject: Geotechnical Engineering Study
Willowdale Townhomes
20628 —76 1h Avenue West
Edmonds, Washington
L&A Job No. 8AO39
INTRODUCTION
Earth Science
SEP 2 3 2008
BUILDING DEPARIMENT
CITY OF EDMONDS
We have Completed a geotechnical engineering study for the site of the subject townhome
project, located at the above address in Edmonds, Washington. The general location of the
project site is shown on Plate I — Vicinity Map. We understand that the proposed development
for the site is to build four townhome buildings, with paved access driveways and underground
stormwater detention vaults. The purpose of this study is to characterize the subsurface
conditions of the site and provide geotechnical. recommendations for grading, slope stability,
erosion mitigation, surface and ground water drainage control, foundation design and
construction, etc., for the proposed development of the site. Presented in this report are our
findings and geotechnical recommendations.
PROJECT DESCRIPTION
For our use in this study, you provided us with a topographic survey and plot plan of the
proposed development of the site. We understand that the existing commercial building
19213 Kenlake Place NE - Kenmore, Washington 98028
Phone (425) 483-9134 - Fax (425) 486-2746 STREET FILE
April 27, 2008
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L&A Job No. 8A039
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currently occupies about the eastern one third of the site will be demolished and four new
townhome buildings will be constructed. The north and south buildings will each contain five
townhome units, the east building three townhome units, and the west building four townhome
units. We understand these buildings will all be above -grade, wood -framed structures supported
on perimeter concrete foundation walls, interior bearing walls and columns.
The townhome units will be accessed by three paved driveways. Driveway A will enter the site
at its southeast comer and run west down the middle of the site. Driveway B will run in front of
the west townhome building and be connected to the west end of Driveway A, while Driveway C
will extend in front of the east townhome building off the north side of Driveway A. Scattered
parking stalls are to be provided in places off these driveways. I
Stormwater collected over impervious surfaces of the subject project will be stored in two
underground concrete detention vaults to be located under the northern half of Driveway B and
under Driveway C. The detention vaults will each be about 10 feet deep. Stormwater in these
detention vaults will be overflowed into a storm drain line under the site and tied to the storm
sewer under 76 1h Avenue West.
SCOPE OF SERVICES
Our scope of services for this study comprises specifically the following:
I Review the geologic and soil conditions at the site based on a published geologic map.
2. Explore the site for subsurface conditions with backhoe test pits to a finn bearing soil
stratum or to the maximum depth (about 12 feet) capable of by the backhoe used in
excavating the test pits, whichever occurs first.
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3. Perform necessary geotechnical analyses and provide geotechnical recommendations for
grading, slope stabilization, erosion mitigation, surface and ground water drainage
control, foundation design and construction, etc., based on subsurface conditions
encountered in the test pits and results of our geotechnical analyses.
4. Prepare a written report to present our findings, conclusions, and recommendations.
SITE CONDITIONS
SURFACE CONDITIONS
The subject site is a rectangle -shaped tract of land situated on a broad, gentle, westerly declining
plain. It is bounded by 76 1h Avenue West to the east, and is adjoined by multi -dwelling
residential developments to the north and south and by single-family residences to the west. An
existing commercial building occupies about the eastern one third of the site. It is a one-story
brick building with a below -grade basement. We understand that this building is to be
demolished to make way for the development of the proposed townhome buildings.
The existing building on the site is flanked by paved driveways to its north and south and a paved
parking lot to its west. The paved areas are graded almost level with fill. A retaining wall lines
the north side of the site, which steps about one to two feet down to the adjoining property to the
north. Bordering the west side of the site is a slope descending westerly at about 211: IV to
3H:lV inclination for a vertical drop of about 5 to 7 feet to the adjoining neighboring properties
to the west. Ornamental trees lines the north, south and west boundaries of the site.
GEOLOGIC SETTING
The Geologic Mgp of the Edmonds East and Part of the Edmonds West Quadrangles,
Washington, by James P. Minard, published by U. S. Geological Survey in 1983, was referenced
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for the geologic and soil conditions at the residence site. According to this publication, the
surficial soil unit at and in the vicinity of the site is mapped as Vashon Till (Qvt).
The geology of the Puget Sound Lowland has been modified by the advance and retreat of
several glaciers in the past and subsequent deposits and erosion. The latest glacier advanced to
the Puget Sound Lowland is referred to as the Vashon Stade of the Fraser Glaciation, which has
occurred during the later stages of the Pleistocene Epoch and retreated from the region some
14,500 years ago.
The Vashon till soil unit was plowed directly under the moving glacial ice during the most recent
glacial period as the glacier advanced over an eroded, irregular surface of older formations and
sediments. It is composed of a mixture of unsorted clay, silt, sand, gravel, and scattered cobbles
and boulders. The Vashon till soils over the top two to four feet are normally weathered to a
medium -dense state, and is moderately permeable and compressible. The underlying fresh till
soils are very dense, and are commonly referred to as "hard pan". The fresh till soils are
practically impervious to stormWater infiltration. The fresh till soils possess the strength of low-
grade concrete and can stand in steep natural slopes or man -make cuts for a long period. If
remained undisturbed and well -drained, the fresh till soils can provide excellent foundation
support to structures with little settlement expected.
SOIL CONDITIONS
Subsurface conditions of the site were explored with five test pits. The test pits were excavated
on April 16, 2008, with a tract -mounted backhoe to depths from 6.0 to 9.0 feet. The approximate
locations of the test pits are shown on Plate 2 - Site and Exploration Location Plan. The test pits
were located with either a tape measure or by visual reference to existing topographic features in
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the field and on the topographic survey map, and their locations should be considered only
accurate to the measuring method used.
A geotechnical engineer from our office was present during subsurface exploration, who
examined the soil and geologic conditions encountered and completed logs of test pits. Soil
samples obtained from each soil unit in the test pits were visually classified in general
accordance with United Soil Classification System, a copy of which is presented on Plate 3.
Detailed descriptions of soils encountered during site exploration are presented in test pit logs on
Plates 4 through 6.
Test Pits 1, 2, 3 and 5 all encountered a layer or layers of fill, totaling from 1.2 to 5.3 feet thick.
The fill is generally consisted of clean silty fine sand with some gravel and occasional cobble and
are medium -dense to dense. The fill obviously had been compacted when it was placed. Test Pit
4, excavated in paved area, encountered 2-inch asphalt pavement underlain by a 14-inch
pavement base of medium -dense, gravelly, fine to medium sand with occasional cobble.
Underlying the fill and pavement base is a layer of weathered soils of medium -dense, brown,
silty fine sand with various amount of gravel and occasional cobble, about 2.2 to 2.9 feet thick.
This layer of weathered soils is underlain to the depth explored by a fresh till deposit of light -
gray, dense to very -dense, silty, fine to medium sand, with various amount of gravel and
occasional cobble.
The soil conditions encountered by the test pits show that the site had been graded to nearly level
with clean compacted fill, varying from about 1.0 to 5.0 feet thick. The paved areas of the site is
topped with a 2-inch layer asphalt pavement over a layer of gravelly sand base about 12 to 14
inches thick.
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GROUNDWATER CONDITION
Groundwater seepage was not encountered by any of the five test pits excavated on the site. The
existing impervious surfaces covering almost the entire site has significantly reduced infiltration
of stormwater into the ground which normally recharges the groundwater under the site. The fill,
the weathered soils and the fresh till soils underlying the site all contain high percentage of fine-
grained material and are in medium -dense to very -dense state. These soils are of low to
extremely low permeability and do not allow stormwater to seep through easily. Therefore, it is
likely that presence of groundwater will be lacking or in minor amount under the site even in the
wet winter months of the year.
DISCUSSIONS AND RECOMMENDATIONS
GENERAL
Based on the soil and groundwater conditions encountered by the test pits excavated on the site,
it is our opinion that the site is suitable for the proposed development from the geotechnical
engineering viewpoint, provided that the recommendations in this report are fully implemented
and observed during construction. Due to the surficial moisture -sensitive, loose, fine-grained, fill
and weathered soils mantling the site, we recommend that grading and foundation construction
work for the proposed development be carried out and completed during the dryer period from
April I through October 31 of the year. If grading and foundation construction work has to
proceed beyond the above dryer period, the recommendations for grading, site stabilization,
erosion mitigation, surface and ground water drainage control in this report should be in place
and operational on a daily basis during construction.
The topsoil and loose surficial 'till within the proposed driveways and parking areas should be
stripped down to medium -dense to dense fill or the medium -dense weathered soils, while the
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topsoil, fill and weathered soils within the building pads of the proposed townhome buildings
should be stripped down to the dense to very -dense, fresh till soils. The exposed soils after
stripping should be compacted to a non -yielding state with'a vibratory compactor to provide
sufficient support to the driveways and parking areas pavement. Conventional footing
foundations placed on the underlying dense to very -dense, fresh Vashon till soils or on structural
fill constructed over such competent basal soils may be used to support the proposed townhome
buildings.
The onsite surficial soils contain a high percentage of fines, and are sensitive to moisture, and
can be easily disturbed during extended periods of heavy rain. Interceptor trench drains or
ditches should be installed along the uphill boundaries of the site, as required, to intercept and
drain surface runoff and near -surface perched groundwater away from construction areas to
minimize soil erosion and to facilitate grading and foundation construction work.
GEOLOGIC HAZARDS AND REMEDIATION
Landslide Hazard
The original ground underling the site sloped gently westward, while the site under its current
condition is graded nearly level with fill and is flanked along its west side by a moderate to steep
slope of about 4 to 7. feet in height. The fill is underlain at shallow depth by dense to very -dense,
fresh Vashon till soils. The fresh till soils are of high to very -high shear strength and have high
resistance against slope failures. Therefore, it is our opinion that the potential for deep-seated
landslides to occur on the site should be minimal.
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Erosion Hazard
The surficial fill and weathered soils are of low resistance against erosion, while the underlying
dense to very -dense fresh till soils are of moderately high resistance against erosion. The level
ground over almost the entire site under its current and developed condition will significantly
reduce the erosion potential of the site. The vegetation cover over the moderate to steep slope
along the west side of the site should be preserved and maintained. Spoil soils and yardwaste
should not be disposed onto this steep slope. Unpaved exposed ground within the site resulted
from construction activities should be re -vegetated as. soon as possible. Concentrated stormwater
should not be discharged unco ntrolled onto the ground within the site, including the moderate to
steep slope along the west side of the site. Stormwater over impervious surfaces, such as roofs
and paved roadways, should be captured by underground drain line systems connected to roof
downspouts or by catch basins installed in paved roadway and driveways. Water collected by
these drain line systems should be tightlined to discharge into a storm sewer or a suitable
stormwater disposal facility.
Seismic Hazard and Design Consideration
The Puget Sound region is in an active seismic zone. The subject site is underlain at shallow
depth by dense to very -dense, Vashon till soils of high to very -high shear strength. There is a
lack of continuous, extensive, static groundwater table at shallow depth under the site. The site
is almost entirely nearly level. The combination of the above makes it rather unlikely for seismic
hazards, such as liquefaction or soil lateral spreading, to occur on the site during strong
earthquakes.. Therefore, the seismic hazard of the site should be minimal. The proposed
townhome buildings, however, should be designed to withstand seismic forces induced by strong
earthquakes. Based on the soil conditions encountered by the test pits, it is our opinion that
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Seismic Use Group I and Site Class D should be used in the seismic design of the proposed
residences in accordance with the 2006 International Building Code (IBC).
SITE PREPARATION AND GENERAL GRADING
Site preparation should include clearing and grubbing within construction limits. The existing
building on the site to be demolished should also have its foundations removed. Topsoil and
unsuitable soils in the root zone should be stripped down to medium -dense to dense fill and/or
medium -dense weathered soils within the paved driveway and parking areas. Topsoil, fill and
weathered soils should be stripped down to the underlying dense to very -dense fresh Vashon till
soils within the building pads. The exposed soils within excavated areas should be compacted to
a non -yielding state with a vibratory roller compactor and proof -rolled with a fully loaded dump
truck or water truck.
During construction, storm runoff and groundwater seepage, if any, should be intercepted with
ditches or interceptor trench drains, as required, and conveyed into the nearby storm inlet in the
street. The storm inlet should be covered with filter socks to keep sediment from entering the
storm sewer. The filter socks should be cleaned periodically to prevent clogging and should be
removed after the construction of the proposed development is completed.
The onsite surficial soils contain a high percentage of fines and are sensitive to moisture. A layer
of clean, 2-to-6-inch rock spalls should be placed over excavated areas and areas of frequent
traffic, as required, to protect the subgrade soils from disturbance by construction traffic. Silt
fences should be erected along the downslope boundaries of the site to prevent sediment from
being transported onto adjoining properties or the street by storm runoff. The bottom of silt
fence filter fabric should be anchored in a trench filled with gravel.
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EXCAVATION AND FILL SLOPES
Under no circumstance should excavation slopes be greater than the limits specified by local,
state and federal safety regulations if workers have to perform construction work in excavated
areas. Unsupported temporary cuts greater than 4 feet deep should be no steeper than 1H:lV in
topsoil, fill or weathered soils, and may be vertical in the dense to very -dense fresh Vashon till
soils if the overall depth of excavation does not exceed 12 feet. Permanent cut banks should be
no steeper than 2H:lV in topsoil, fill or weathered soils, and no steeper than 1-1/211: IV in the
underlying dense to very -dense, fresh, Vashon till soils. The soil units and the stability of cut
s lopes should be verified by a geotechnical engineer during excavation.
Permanent fill embankments, required to support structural or traffic load should be constructed
with compacted structural fill placed over undisturbed, compacted proof -rolled, dense to very -
dense, fresh Vashon till soils after the surficial unsuitable soils are completely stripped.
Permanent fill placed over sloping ground steeper than 20% grade should be structurally
supported. Sloping ground steeper than 15% grade should be benched with vertical steps not
exceeding 4 feet tall after stripping of the surficial unsuitable soils and prior to constructing
permanent fill embankment. The slope of permanent fill embankments should be no steeper than
2H:IV. Upon completion, the sloping face of permanent fill embankments should bethoroughly
compacted to a non -yielding state with a hoe -pack.
The above recommended cut and fill slopes are under the assumption that groundwater seepage
would not be encountered during construction. If groundwater seepage is encountered, the
construction should be immediately halted and the slope stability re-evaluated. The slopes may
have to be flattened and other measures taken to stabilize the slopes. Surface runoff should not
be allowed to flow uncontrolled over the top of cut or fill slopes. Permanent cut slopes or fill
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embankments should be vegetated as soon as possible for erosion protection and long-term
stability, and should be covered with clear plastic sheets, as required, to protect them from
stormwater until the vegetation is fully established.
STRUCTURALFILL
Structural fill is the fill that support structural or traffic load. Structural fill should consist of
clean granular soils free of organic and other deleterious substances, with particles not larger than
four inches. Structural fill should have a moisture content within one percent of its optimum
moisture content at the time of placement. The optimum moisture content is the water content in
the soils that enables the soils to be compacted to the highest dry density for a given compaction
effort. The onsite clean glacial till soils may be used for structural fill if they meet with the
above requirements for structural fill. Imported material to be used as structural fill, should be
clean, free -draining, granular soils containing no more than 5 percent by weight finer than the
No. 200 sieve based on the fraction of the material passing No. 4 sieve, and with individual
particles not larger than four inches.
The ground over which structural fill is to be placed should be prepared in accordance with
recommendations in the SITE PREPARATION AND GENERAL GRADING and
EXCAVATION AND FILL SLOPES sections of this report. Structural fill should be placed in
lifts no more than 10 inches thick in its loose state, with each lift compacted to a minimum
percentage of the maximum dry density determined by ASTM D 15 5 7 (Modified Proctor Method)
as follows:
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Application
Within building pads and under foundations
Driveway/parking area subgrade
Retaining wall backfill
Utility trench backfill
STORMWATER DETENTION VAULTS
% of Maximum Dry Densit
95%
95% for top 3 feet and 90% below
92%
95% for top 4 feet and 90% below
Two underground concrete detention vaults will be constructed, one under the northern half of
Driveway B and the other under Driveway C, to store storm runoff collected over impervious
surfaces of the subject project. These vaults will be about 10 feet deep. At this depth, the bottom
of the vaults will be embedded into fresh till soils, and they may be supported on footings
founded on the dense to very -dense, fresh till soils. An allowable soil bearing pressure not to
exceed 4,000 psf may be used for the design of the vault footing foundations.
A drain line consisting of perforated, rigid PVC, drain pipe or slotted, corrugated ADS, drain
pipe, at least 6 inches in diameter, should be installed at a few inches below bottom of the
perimeter footings of the vault walls to intercept and drain away groundwater which may flow
towards the detention vaults. The drain lines should be sloped at sufficient gradient (0.5%
minimum) to generate flow by gravity, and water collected in the drain lines should be tightlined
to discharge into a storm sewer or a suitable stormwater disposal facility. The drain lines should
be completely embedded in washed gravel wrapped in a layer of non -woven filter fabric, such as
140N by Mirafi Inc. or approved equal. A vertical drainage blanket at least 12 inches thick
horizontally, consisting of compacted clean 1-inch washed gravel or 7/8-inch crushed rock,
should be placed against the back of the vault perimeter walls. The remaining backfill should be
constructed of structural fill. Alternatively, a vertical drain mat, such as Miradrain 6000 by
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Mirafi Inc. or equal, may be placed against the vault perimeter walls in lieu of the vertical
drainage blankets. The vertical drainage blankets or drain mats should be hydraulically
connected to the drain lines at the base of the vault perimeter walls. Sufficient number of
cleanouts at strategic locations should be installed for periodical cleaning of the vault wall drain
lines to prevent clogging.
The vault perimeter walls will also serve as retaining walls to support cut banks and backfill.
The vault perimeter walls capped with a lid would be restrained at their top from horizontal
movement and should be designed for at -rest lateral soil pressure. For the condition that
groundwater behind the vault perimeter walls can be ftilly drained by the drain lines provided at
the base of the walls, we recommend an at -rest soil pressure of 50 pcf equivalent fluid density
(EFD) be used for the design of vault perimeter walls. To counter the at -rest pressure, a passive
lateral soil pressure of 375 pcf EFD may be used,,except that the passive pressure within the top
12 inches of the finish subgrade should be ignored. The above passive pressure assumes the
backslope of the walls is level or rising away from the walls. The at -rest soil pressure may also
be resisted by the ftiction force between the footings and the subgrade soils based on a
coefficient of ffiction of 0.60.
If the site grades are such that it, is not feasible to completely drain groundwater behind the vault
walls with a gravity drain line system, the hydrostatic pressure on the perimeter vault walls
should also be taken into consideration for the design of the walls. For the condition that the
perimeter drain line has to be placed higher than the perimeter vault wall footing level, the
perimeter vault walls should be designed for a lateral soils pressure of 50 pcf EFD above the
drain line level and a combined lateral soil and hydrostatic pressure of 80 pcf EFD below the
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drain line level. The above lateral pressures on the walls may be countered by a passive soil
pressure of 375 pcf EFD above the drain line and 210 pef EFD below.
The detention vaults should also be designed under the seismic loading condition based on a 100-
year seismic event. For seismic design of the detention vault walls, a pseudo static soil pressure
diagram of an inverted triangle from the finished ground level to the bottom of the footing
foundations should be used. Based on the soil conditions encountered in the test pits, we
recommend the lateral soil pressure at the top of the inverted triangle be 8.5H psf for a 100-year
seismic event, where H is the height from ground surface to bottom of footings in feet. A one-
third increase in the above recommended allowable soil bearing pressure may be used when
considering the seismic loading condition.
The above design soils parameters are unfactored ultimate values. Proper factors of safety
should be applied for the design of the vault walls against sliding and overturning failures.
GROUNDWATER PICKUP BY DETENTION VAULTS
Groundwater was not encountered by any of the five test pits excavated on the subject site.
Footing foundation poured on fresh till soils will be quite tight for groundwater to penetrate
through. Therefore, it is our opinion that groundwater pickup by the detention vaults may be
neglected in the design of the capacity of the detention vaults.
BUILDING SETBACK
The purpose of building setback from the top or toe or an overly steep portion of a slope is to
establish a safe buffer such that if a slope failure should occur on the slope, the stability of the
structure can be maintained and damages to the structure minimized. The moderate to'steep
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April 27, 2008
Willowdale Townhomes
L&A Job No. 8A039
Page 15
slope along the west side of the site is partially composed of medium -dense fill overlying
medium -dense native weathered soils and dense to very -dense fresh till soils. The steep slope,
however, is only about 5 to 7 feet high. We recommend that the west townhome building be set
back at least 5 feet from the crest of this adjacent steep slope. The footing foundations of this
west townhome building should also be embedded at least 6 inches into the underlying, dense to
very -dense, fresh till soils. To reach the dense to very -dense fresh till soils, the footing
foundations of the west building will have to be extended up to about 8 feet below the existing
grade. A plane drawn from the edge of footing foundations to the toe of the adjacent steep slope
should be no steeper 3H:IV. If the above recommendations are met, the west townhome
building will remain stable even sloughing of soils on the slope may occur.
BUILDING FOUNDATIONS
Conventional footing foundations may be used to support the townhome buildings to be
constructed on the site. The footing foundations should be supported on dense to very -dense
fresh Vashon till soils or on structural fill constructed on these competent basal soils. Excavation
depth of 4.0 to 7.5 feet below the existing grade would be required to reach down to such
competent soils. Water accumulating in footing trenches should be pumped dry and disturbed
loose and saturated soils in footing trenches should be completely removed or down to firm
bearing soils before pouring concrete for footing foundations.
If the above recommendations are followed, our recommended design criteria for footing
foundations are as follows:
Allowable soil bearing pressure, including dead and live loads, should be no more than
3,500 psf with footing foundations constructed on dense to very -dense, fresh, Vashon till
soils, and no more than 3,000 psf for footings poured on structural fill constructed on
LIU & ASSOCIATES, INC.
0 0
April 27, 2008
Willowdale Townhomes
L&A Job No. 8A039
Page 16
these competent basal soils. The footing bearing soils should be verified onsite by a
geotechnical. engineer after the footing trenches have been excavated and before the
footings are poured.
The minimum depth to bottom of perimeter footings below adjacent final exterior grade
should be no less than 18 inches. The minimum depth to bottom of the interior footings
below top of floor slab should be no less than 12 inches.
The minimum width should be no less than 16 inches for continuous footings, and no less
than 24 inches for individual footings, except those footings supporting light deck and
porches.
A one-third increase in the above recommended allowable soil bearing pressure may be used
when considering short-term, transitory, wind or seismic loads. For footing foundations designed
and constructed per recommendations above, we estimate that the maximum total post -
construction settlement of the buildings should be 1/2 inch or less and the differential settlement
across building width should be 3/8 inch or less.
Lateral loads on buildings can be resisted by the friction force between the foundations and the
subgrade soils or the passive earth pressure acting on the below -grade portion of the foundations.
For the latter, the foundations must be poured "neat" against undisturbed soils or backfilled with
a clean, free -draining, compacted structural fill. We recommend that an equivalent fluid density
(EFD) of 325 pcf (pounds per cubic foot) for the passive earth pressure be used for lateral
resistance. The above passive pressure assumes that the backfill is level or inclines upward
behind the foundations for a horizontal distance at least twice the depth of the foundations below
final grade. A coefficient of friction of 0.60 between the foundations and the subgrade soils may
be used. These are unfactored values, and a proper factor of safety should be used in calculating
the resisting forces against lateral loads on the buildings.
LIU & ASSOCIATES9 INC.
April 27, 2008
Willowdale Townhomes
L&A Job No. 8AO39
Page 17
SLAB -ON -GRADE FLOORS
Slab -on -grade floors, if used, should be placed on firm subgrade soils prepared as outlined in the
SITE PREPARATION AND GENERAL EARTHWORK and the STRUCTURAL FELL sections
of this report. Where moisture control is critical, the slab -on -grade floors should be constructed
on a capillary break which is in turn placed on compacted subgrade. The capillary break should
consist of a minimum four -inch -thick layer of free -draining 1-inch gavel or 7/8-inch crushed
rock containing no more than 5% by weight passing the No. 4 sieve. We recommend that a
vapor barrier, such as a 6-mil plastic membrane, be placed over the capillary break to keep
moisture from migrating upwards.
DRIVEWAY AND PARKING AREA PAVEMENT
Performance of driveway and parking area pavement is critically related to the conditions of the
underlying subgrade soils. We recommend that the subgrade soils within the driveways be
treated and prepared as described in the SITE PREPARATION AND GENERAL
EARTHWORK section of this report. Prior to placing road base material, the subgrade soils
should be compacted to a non -yielding state with a vibratory roller compactor and proof -rolled
with a piece of heavy construction equipment, such as a fully -loaded dump truck. Any areas with
excessive flexing or pumping should be over -excavated and re -compacted or replaced with a
structural fill or crushed rock placed and compacted in accordance with the recommendations
provided in the STRUCTURAL FILL section of this report.
We recommend that a 6-inch-thick minimum, compacted, crushed rock base (CRB), consisting
of 7/8-inch-minus crushed rock, be used for the roadway. Such crushed rock base may be
replaced with a 2-to-3-inch layer of leveling course consisting of 7/8-inch crushed rock if the
roadways are to be based on'cuts into undisturbed, dense to very -dense, Vashon till soils. The
LIU & ASSOCIATES, INC.
0
April 27, 2008
Willowdale Townhomes
L&A Job No. 8AO39
Page 18
crushed rock or subgrade base should be overlain with a 3-inch asphalt treated base (ATB)
topped by a 2-inch-thick Class B asphalt concrete (AC) surficial course.
DRAINAGE CONTROL
During Site and Driveway Grading
The onsite surficial fine-grained surficial soils are of moderately -low to extremely -low
permeability. They can be saturated quickly and may cause surface runoff and groundwater
seepage during periods of heavy rain. To minimize potential difficulties for site grading work
due to storm runoff during construction, one or more lines of ditches or interceptor trench drains
should be installed, as required, on the uphill sides of the site to intercept storin runoff and near -
surface perched groundwater. Water thus collected should be drained into a nearby storm sewer
inlet. The storm inlet should be covered with a filter sock.
Excavation for Stormwater Detention Vaults and Buildings
Excavation of stormwater detention vaults and building footprints, if encountering groundwater,
should have the bottom of excavation sloped and ditches excavated along the bases of the cut
banks to intercept and direct groundwater seepage into a sump pit from which water can be
pumped out of the excavation pits. A layer of 2-inch crushed rock should be placed over Pinn
subgrade soils under footings, as required, to protect the soils from disturbance by construction
traffic. This crushed rock base should be built to a few inches above groundwater level, but not
less than 6 inches thick. The crush rock base should be placed in lifts not more than 12 inches in
loose state, with each lift compacted to a non -yielding state with a vibratory mechanical
compactor.
LIU & ASSOCIATES, INC.
April 27, 2008
Willowdale Townhomes
L&A Job No. 8A03 9
Page 19
Runoff over Impervious Surfaces
Storm runoff over impervious surfaces, such as roofs and paved driveways and parking areas,
should be collected by underground drain line systems connected to downspouts and by catch
basins installed in paved: driveways and parking areas. Stormwater collected by such drain line
systems should be tightlined to discharge into a storm sewer or a suitable stormwater disposal
facility.
Surface Drainage
Water should not be allowed to stand in any areas where footings, slabs, or pavement is to be
constructed. Final grading of the site should allow storm runoff to flow away the buildings. We
recommend the finish ground be sloped at a gradient of 3 percent minimum for a distance of at
least 10 feet away ftom the building, except in the areas to be paved.
Building Footing Drains
A subdrain system should be installed around the perimeter footings of each building to
minimize accumulation of groundwater under the buildings. The subdrains should consist of a
minimum 4-inch, perforated, rigid, drain pipe, laid a few inches below the bottom of perimeter
footings. The trenches and the drain lines should have a sufficient gradient to generate flow by
gravity. The drain lines should be embedded in washed gravel completely wrapped in non-
woven filter fabric to within about 12 inches of finish grade. The remaining trenches may be
backfilled with onsite impervious soils. Water collected by the perimeter footing subdrains
should be tightlined, separately from the roof and surface stormwater drain systems, to discharge
into a storm sewer or a suitable stormwater disposal facility.
LIU & ASSOCIATES, INC.
4.
April 27, 2008
Willowdale Townhomes
L&A Job No. 8AO39
Page 20
Cleanouts
Sufficient number of cleanouts at strategic locations should be provided for the underground
drain line systems. The underground drain line systems should be maintained periodically to
prevent clogging.
LIMITATIONS
This report has been prepared for the specific application to the subject project for the exclusive
use by Murphy Building Company and their associates, consultants, representatives, and
contractors. We recommend that this report, in its entirety, be included in the project contract
documents for the information of the prospective contractors for their estimating and bidding
purposes and for compliance with the recommendations in this report during construction. The
conclusions and interpretations in this report, however, should not be construed as a warranty of
the subsurface conditions. The scope of this study does not include services related to
construction safety precautions and our recommendations are not intended to direct the
contractor's methods, techniques, sequences or procedures, except as specifically described in
this report for design considerations.
Our recommendations and conclusions are based on soil conditions encountered in the test pits,
our engineering analyses, and our experience and engineering judgment. The conclusions and
recommendations are professional opinions derived in a manner consistent with the level of care
and skill ordinarily exercised by other members of the profession currently practicing under
similar conditions in this area. No warranty, expressed or implied, is made.
The actual subsurface conditions encountered during construction may vary from those
encountered in the test pits. The nature and extent of such variations may not become evident
LIU & ASSOCIATES9 INC.
April 27, 2008
Willowdale Townhomes
L&A Job No. 8AO39
Page 21
until construction starts. If variations occur then, we should be retained to re-evaluate the
recommendations of this report, and to verify or modify them in writing prior to proceeding
further with the construction.
CLOSURE
We are pleased to be of service to you on this project. Please feel free to call us if you have any
questions regarding this report or need further consultation.
Six plates attached
Yours very truly,
LIU & ASSOCIATES, INC.
J. S. (Julian) Liu, Ph.D., P.E.
Consulting Geotechnical Engineer
LIU & ASSOCIATES, INC.
0 PLANNING DATA STREET �FI:L:E]
New Commercial I Multi -Family Projects
Name. M vv n tv 0 W 4�ty
Site Address:
8_�
Date: 6[1-T76 F
Plan Check #: BLD - 20
0
Project Description:
Use(s) Proposed:
Allowed Use: 1!!91 NO)
CUP File Number:
To Allow What Uses:
Legal Nonconforming Land Use Determination Issued: (YES 16�)
Reduced Site Plan Provided: (YES 14�p
Zoning: Z.
Map Page:
Comp Plan Design.ation:/qdl+,,
Corner Lot: (YES Top
Flag Lot (YES
ADB File Number e�NWOcgCC01
Lot Area:
V
Plans Match ADB Approved:A�(� NO)
Shoreline Required: (YES 1
Critical Areas Determination %1-12
11 Study Required
)fmaiver
SEPA D
,Ptermination:
Exempt
El Needed (for sites with 500 cubic yards of grading or within 200 feet of Puget Sound or Lake
Ballinger. Requires: (1) Fee, (2) Environmental Checklist, and (3) APO List with notarized form)-
60 uired.s&tbacks
Street-
Side-
Side:
is-
Aclual$ethacks
Street:
Side:
Side: 10
Rear-
Lot Coverage/FAR-.Reqtrh�. 0 cZK
Lot coverage4*01tt-Provided: -2
Lot Coverage/F-AR Galeulation 5- 2- 17W3 4S
Building keight
Datum Point: monu&%Or 1, yvrf�e-
Datum Elevation: q3 7 t7"
Maximum Height- zyf-r
ActualHeight:
Subdivision: 1,P4— /'D 14II'llowdaf A10-
Lot Aggregation Required.- /V0
Landscaping Matches ADB Approved:
Lands.caping Bid Provided: (YES (90
n Amount (1 30% TJ)- -7( 1 - 3 -0
ft A , A log
i K I I-IVIU3
Plan Review By:
ola�� I C14, N �os
0 PLANNING DATA 0 F =ZLE
New Commercial I Multi -Family Projects
Commercia1Pa.Wn_4,A;aaY
Ai
Business Name Type/Use Parking Tenant Required_
Ratio Area arking
Total Parking Required.
Total Parking Provided:
# Bedrooms per Dwelling Unit
Parking Ratio
# Units
Required
Parking
Studio
1-21D.U.
I Bedroom
1_51D.U.
2 Bedrooms
1.81D.U_
3 + Bedrooms
2.0/D.U-
17
el
((I �(c 4e -3q co vj_�'e C/ Ubtal Parking Required:
W/ , d^ A)f cxla- J
I f Z Total Parking Provided:
RX
zu
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rO
\'_ - - 5 rt-�O" -k- ' 30 �'te�tvr'
7��/ 6 `7 +
Plan Review By.
03S-'2, C-a
4 q
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4-0 ac" 2- -7 C
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318.73'
.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - — - — - — -
Ttalls
Existijn Parking 5
Existing Parking
46 Stalls
10
I or
m
PROVE Y PLANNING
318.64'
Zone -
Setbacks
Front
Sides
Rear
Other
LEGAL DESCRIPTION
TRACT 10; WLLOWDALE GARDENS
ComertFla SITE PLAN
Ired ctual W-0"
V—Z I
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...... IMM
I
TAX PARCEL ID NO, �
00614300001000
E CC E I V E D
AyC3 I J� 2004
r,.r)l WTPR
PLICATIQW
JW& ff.--m- i !�, -. "
:;8EDE Eft'PERMT
EASEMENT No . ....................... . .
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NEW CONSTRUCTION REPAIRS E]
'E�
00W.-N LJF2-j -S
ER ....... - ---------------------------- .............................. coNTRAcToR-HNIP�E-lm� . ..... WNS ............................ . ..... PERMIT No.
..... .....
LEGAL DESCRIPTION': LOT No . .............................................. BLOCK No . .................... n�
NAMEOF ADDITION . ............................................................................ ............ .. , ..... . .........
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Approv
DATE ......
,.7 77
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. .. ..............
CITY OF EDMONDS SIDE SEWER PERMIT
WATER -SEWER DEPARTMENT
_17vaz
PERMIT
Call 775-2525 for side sewer inspections BEFORE covering any portion of the construction.
Inspection will be provided within 24 hours after requst. NO Sat., Sun., or holiday inspections.)
ADDRESS LOCATION OF CONSTRUCTION ............
......................................... ------------- ......................................... . .......................................................
PROPERTY LEGAL DESCRIPTION ........... ..................................
............................................................................................................................................
.............................. .................... ...................... . ........................................................................................ . ......................................................................................
V7N................................................................ 0** ER AND/OR -BUILDER ------------ ...................... ................................... .......................................................
ACTOR'S NAME & ADDRESS ................. ................... -------------------------------------- ----
.......................... . ... .......................................................
)TP
Permissloft'is granted ---------------- .......... .................. 19.1 for repair and/or connection of a side sewer to the city sanitary sewer
system In accordance with City of Edmonds ordinances.
.14 A.7-V,.NTION IS CALT D TO THE FOLLOWING:
3� No. I —The owners of the property may obtain a permit to construct sewer inside property line. A licensed Side Sewer Contractor must be employed to construct
side sewer in street area. Do not cover any portion of sewer before it has been inspected.
NOTE No. 2—All work performed in city right-of-way requires an Invasion of Right -of -Way Permit obtainable from the City Engineer's office.
NOTE No. 3—Obtain full information regarding Ordinance 11.16.030 and Regulations governing side sewers when you get permit.
NOTE No. 4—Top of side sewer must have at least 30 inches coverage at property line and 12 inches inside property line; minimum grade of 2%. No bends in grade
sharper than % will be permitted.
NOTE No. 5--Trenches in street must be water settled and surface of street restored to original condition. Contractors shall be responsible for failure due to improper
work which may develop within one year of completion.
NOTE) No. 6--It is unlawful to alter or do any other work than is provided for in the permit, or to do any work on the main sewer or Its appurtenances except to in-
sert the pipe into the wye.
DISAPPROVEDDate .... ...... ............... Date ----- . ... . .................. . My ................ Date ............... . ................... ................
APPROVED Date...
....................... 7 . ................
....................................................................
R..ksx
7
....... . ..... .......................... . .............................................................. . ...........................................................................................................
......................................................... - ---------------------------------------------------------------------------------------- . ........
.......................... . .. ....................................................
BOTH Permit Co -e MUS
Be Signed By Owner of Firm Performing Construction PRIOR To Request For Inspection
'U
I ... . ........... ..... .. .. .. .. M .......................... ... hereby certify that the side sewer installation constructed under this permit
er Ai.' 3�
CO
Owner of ont ti Firm PerMining Construction)
V-9 instaJle accord nce all gover ng ordinances of the City of Edmonds.
Datedthis ..... ............... "Y ............................................... 19-1
VV Check BEFORE you dig for: Water Gas E], Telephone E], Power E], S, F]9 Other F] V V
-7-
I *
0
APPLICATION
for
The City of Edmonds SEDE SEWER PERY[IT EASEMENT No . ..........................................
NEW CONSTRUCTION 3K REPAIRS 0 GJV IVEP-MO A) Be i t I
,-oop
OWNER ..... i .. .......... a ..... . ;5.,9-A-P ......... 4va-,.t;.�5 .......................................... CONTRACTOR -14AR5q�� ......
.. .. .. . ...... .... ........... .............. PERMIT No. 9� .. ............
rlvl�
ADDRESS ----- ....... ........ ....... .............................. LEGAL DESCRIPTION: LOT No . .............................................. BLOCK No . ............................................
-7
NAME OF ADDITION ... .......... ......... .........
LP 0'
11
— -44=65 —
Approved:
DATE................................................ By ......................................................................
BUILDING DEPARTMENT"" ApplicantFill
PERMIT APPLICATION Inside Heavy Lines_
NAME (OR NAME OF BUSINESS)
MAILING ADDRESS
z e . -72
3: Z-C
0 -CI T Y TELEPHONE NUMBER
'Erl, /-1,/ -7 7 5% 34-sb
NAME
I-
U
III ADDRESS
I-
U
M CITY ITELEPHONE NUMBER
< i -_7. (e, 2- cl
N INAME
ADDRESS
I-
U
M CITY TELEPHONE NUMBER
I-
z
0
U STATE LICENSE NUM13ER ICITY LICENSE NUMBEI
Legal Description of Property (Show Below or Attach Four Copies)
4-
z
0-
U
14
W
W
j
USE NW PEPOW
ZONE�g NUMB PJRF:FT
- FILF
JOB
ADDRESS
7A f — ?k — e�es
�...
LEGAL LOT
U ISION NO.
'YE S No
PUBLIC RIGHT OF WAY PER ORDINANCE- N
(�:e 0
EXISTING RIGHT. OF WAY
PROPOSED RIGHT OF WAY
DEFICIENCY OF RIGHT OF WAY
STREET/UTILITY WORK REQUIRED
DYES
ZNO It
PERMIT FOR WORK IN PUBLIC R/W
C1 YES
0
NO
UNDERGROUND WIRING REQUIRED
El YES
NO U
CONNECTION TO SANITARY SEWER
OYES
NO M
SEPTIC TANK PERMIT REQUIRED
Y ES
NO L
SEPTIC TANK PERMIT NO.
SEE MEMO DATED
REMARKS
CHECKED BY
ETER SIZE I BUILDING SUPPLY SIZE
SIGN AREA. ENV. REVIEW
ALLOWED I PROPOSED Cor-'PLETEI EXEMPT
I .
REMARKS
VARIANCE OR CU IPLANNING REVIEW BY I DATE
YARDS
NEW ENTIAL' GAS
LINE
FRONT
FIRE ZONE
TY
=O.-RES..ENTIALj0 SIGN
�AD
1
. 0
DEMOLISH RETAINING
SPECIAL INSPECTOR
WALL
ALTER EXCAVATE FENCE
OR FILL X FT)
REQUIRED
0 YES 0 NO
PLAN CHECKED By
REPAIR PRE -MOVE swim
INSP. POOL
REMARKS
Z NUMBER OF STORTE�SNUMBER
OF
0
DWELLING
UNITS
NATURE OF WORK TO BE DONE
'n Apo JA-7-t-fijv�� PPRT1
M
0
PLAN CHECK FEE
PROPOSED USE
4-k/vc/-�
PLOT PLAN (INDICATE BUILDING SETBACKS,
ABUTTING STREETS)
BUILDING
U
In
W
PLUMBING
0
MECHANICAL
FENCE
SIGN
VI "Applicant, on behalf of his or her spouse, heirs, assigns and
W
successors in interest, agrees to indemnify, defend and hold harmless
j
2 the City of Edmonds, Washington, its officials, employees, and
RETAINING WALL
T
agents from any and all claims for damages of whatever natpre,
<
3: arising directly or indirectly from the issuance of this permit. Issu-
SWIMMING POOL
LOT COVERAGE
SIDE REARI
F CONSTRUCTION I CODE lHE
k, OCCUPANCY OCCUPA
GROUP LOAD
THIS SITE IS LOCATED IN THE CITY
OF EDMONDS. LOCAL SALES TAX
SHOULD BE CODED 31.04.
VALUATION I FEE
M
W
3:
01 ance of this permit shall not be deemed to modify, waive or reduce
J
0 anY requi-enictit or any city ordinance nor limit in any way thu
5D Ce,^e7 �—*
aookyrO4 Y-.-
I - W aE*ISAR Date
VIC WRKS DEPAMT.
BUILDING PER,11T REVM4
AVE-
_Wess
Street Right -of -Way Existixig C:) REQD
Access Easements Existing REQD
Utility Easenxmt Existing REQD
Lot per Subdivision Assessor Map
Site Plan Checked for Accuracy
Underground Wiring Reqd.
Check Accuracy of Legal Description
Envi.roruTeantally Sensitive Area
Envirornental Checklist Reqd.
Flood Hazard Zone
Shoreline Manaaement Area
Slope, Soil, Vegetation.
Stream, Creek, Drainage Ba i
slul
Existing.Z Per Code. -:VVL
0=9
Ammities Design Board Approval Reqd. ADB # Approval
Board of Adjustment Appr. al Reqd.
Review -By: Date..
Existing'' Water MTain. Size
14ater Main Reqd.
-Service Line.Reqd.
Hydrant Size Existing
Hydrant:Reqd. Per Fire Code Size
Detector Check Meter Reqd.
Cross Connection.Inspection
.Fire Department:Comrents
.Water.Meter Charge Reqd.
Review by: Date:
Septic Tank Permit Reqd. Permit No.
Sanitary.Sewer Availability Proi
Drawing No. File No.
Side Sewer Availability
Sanitary Se�%Ter Connection Fee Reqd.
Review B)r: Date.:
Aft
01�en Ditch Existincy Reqd..
Culvert Rcqd.,
Size
P4 Catch Basin Rcqd. Indicate on Site Plan .
0
Shoulder drainage miailitain collectim on swa-le open -runoff
- --------- -
c -ffiole rcqd. Indicate m Site Plan
.,Soil Conditims and Grouqd I -later Field Cliecked
RO-\'.ie%" by t C
Street Paving Reqd.
Curb and.Gutter Reqd.
Sidewalk Reqd.
Curb Cu t for Driveway Reqd.l.
Right -of -Way Cons truction� Peradt Reqd.
Bond Reqd. for Public in-provem--i-its
Street NarTc Si&m Reqd,.
Other Signin.- Rccid.
Pre Pernii U Site Inspection nva Ge on
0
F�4 'BY: S ME R
VIATER.
S'IIZLT%T
�xl
ENIGINEERIN�,
Special Rcquira��-nt:s listed iii mem, to. C6111ninity T vel nt'Departmpant,
p opm
Di\
r1sioll
13Y Date
0 Mll items filled in on Building Permit Application
BY Date
Drawings Stan-ped and Notations 1,1-ide
'y Date
]A Approved by Public 1-Jork-s Dc--pa1-n,,)c!nL:
70'0�.
�W-'
�evj-sed: IV 10-19,77
NC
Y
DE�,�Rf'M-E*N"T�OF!*B—UILI-DINGS
PER INTERNVONAL RESIDENTIAL.C&E " SECTION R110
AT:
Occupancy established by this certificate:
No. Stories: 2 B
-,��Building Permit M BLD2008-0288
R3 Dwell, ing,U nits:
em nt: N14 Typei of Construction: VB
Owner of building: Anna Laffi
The Sincile Family Residence at .10
of the 2006 edition of the International Residential
.the proposed occupancy is classified.
;pected and approved complying with the requirements
up and division of occupancy and the use for which
Issued this 23rd day of July, 2010
k
By:
Any change of occupancy or use requires a bull
Chief Building Official
S Ifto �
IREET RE
and a new Certificate of.Occupancy issued by the City of Edmonds Building Official.
k
,207,50 7b ro
RECEIVEDs
mmyDEC 3 - 2007
ENGINEERING DIVISION
BUILDING COMPANY, INC
6203 202nd Street SW November 30, 2007
Lynnwood, WA 98036
Jeanie McConnell
425.775.3388 Office
Engineering Program Manager
425.775.3312 Fax
City of Edmonds
Murphbcll3K3
121 5th Avenue North - 2nd Floor
Edmonds, WA 98020
murphybuilding.com
Re.-` Development ofsite on 76 1h Avenue
Dear Ms. McConnell:
BUILDING ON YEARS OF QUALITY
,20
1988-2008
STREET FILE
We are writing to request a meeting to discuss our pending development of the site
located at 20728 on 76 1h Avenue. Particularly we would like to meet to discuss the
installation of storm water detention on the property. It is our opinion that storm water
vaults are not required on the property.
Storm Water Management in the City of Edmonds is regulated by EMC 18.30. EMC
18.30.00 — Purpose states, among other things, that the purpose of the regulation is to:
B. To protect land and the ecological balance of the 'receiving water bodies near
development sites from increased surface water runoff rates that could cause
flooding or erosion, scouring, and deposition of sediment due to the
development;
The proposed site on 76 Ih Avenue was built prior -to 1977 and currently has
approximately 37,068 square feet of impervious surface (of a total lot size of
approximately 41, 526). We are planning on building town homes on the site that will
have an over all significant net reduction of impervious surfaces on the site.
According to the Edmonds Code our project is defined as a redevelopment of the site.
18.30.010 Definitions — defines redevelopment as:
GG. "Redevelopment" means, on an already developed site, the creation or
addition of impervious surfaces, structural development includin2 construction,
installation or expansion of a building or other structure, and/or replacement of
impervious surfaces that are not part of a routine maintenance activity and land
disturbing activities associated with structural or impervious development.
A %'- 6
MEMBER MEMBER
M y
BUILDING COMPANY, INC
BUILDING ON YEARS OF QUALITY
,09
1988-2008
It is the position of Murphy that the 37,068 square feet of impervious surface "on an
6203 202nd Street SW already developed site" is grandfathered and detention of storm water is not warranted
Lynnwood, WA 98036 for this project. The bottom line is that there are no "new" impervious surfaces proposed
425.775.3388 Office for the development of this site.
425.775.3312 Fax From a surface water perspective, this project is a storm water "win" for the City
Murphbc I 13K3 because the end result will be a reduction of impervious areas that will reduce the storm
water flows from the site. The existing storm water system was designed and
murphybuflding.com construction based on the 37,068 square feet of impervious surfaces currently on the site.
In addition to the overall reduction in stormwater runoff rates from the site, we will be
providing water quality treatment measures that will be designed to comply with current
code and these will provide stormwater treatment that the site is current lacking. We
look forward to the opportunity to meet with you and discuss the successful completion
of this project that will be a positive addition to the City of Edmonds.
Sincerely,
Bob Murphy
President, Murphy Building Company, Inc
MEMBER MEMWR
CHICAQO TrrLE INSURANCE COMPANY
3" HOYT AVEMM EVEREff, WA 98201
PHONE: (425)259-M FAX: (425)259-8239
Standard Q%mer's Policy of 'ride Insurance -1265
SCFWJDULEA
ilolicyNo.- 5303651
Your Rof: WELLOWIDALE BULWING/MURPHY BUILDING
Address Reference: .*** SEE -ATTACHED
Amountoflusurance: $1,400,000.00 Preinium: $2,424. 00
Date of Policy- DECEMBER 21, 2007 at: 10: 02 AM
1. Name of Insured:
MVRPHY-BUILDING COMPANY, INC., A WASHINGTON CORP09ATION-
2. The estate or interest in the Und that is iwwcd by this policy is:
PER SIMPLE
3. - Title -is vested in:
MURPHY BUILDING COMPANY, INC., A WASHINGTON CORPORATION
4. The Land referred to in this policy is described as follom
LOT 10 OF.WILLOWDAXX GARPENS DIVISIQN*NO. 1, ACCORDING TO THE PLAT THEREOF,
RECORDED IN VOLUME 10 OFPLATS, PAGE 72, RECORDS'OF SNOHOMISH COUNTY,
WASHINGTON;
EXC!RPT THE WEST 318 F13ET THEREOF.
SITUATE IN THE COUNTY OF SNOHOMISH, STATE OF WASHINGTON.,'
THIS POLICY VALID ONLY IF SCHEDULE - B IS ATTACHED
080P18A 11/14/07 bk
[44 IV, I [V.IKKM I VICalz &IN
(Address Reference of Schedule A Exhibit )
PoficyNo: B303651
20628 76TH AVEWW WEST,
EDMWDS, WASHrNGTON 98026
TAX NO. 006143-000-010-00
OBOPSAPO 11/14/07 bk
CHICAGO TME INSURANCE COWANY
Standard Owner's Policy of Title Insurance
SCHED= B PolicyNo: 005303651
EXCEPTIONS FROM COVERAGE '
This policy does not insure against less -or damage and the Company will not pay costs, attorneye fees or
expenses that arise by reason of
GENERAL EXCEIMONS:
A. Rights or claims of parties in possession, or cJaiming possession, not shown by the Public Records.
B. Any encroachment, encumbrance, violation, variation, or adverse circumstance affecting the Title that would
be disclosed by an accurate and complete land survey of the Land.
C. FAsements, prescriptive rights, rights -of -way, liens or encumbrances or claim thereof, not shown by the
Public Records.
D. Any lien, or right to a lien, for contributions to employee benefit funds, or for state workers' compensation,
or for services, labor, or material heretofore or hereafter furnish4 all as imposed by law, and not shown by
the Public Records.
E. Taxes or special assessments which are not yet payable or which are not shmm as existing liens by the Public
Records.
F. Any lien for service, installation, conneirtion, maintenance, tap, capacity, or construction or similar charges
for sewer, water, electricity, natural gas or other utilities, or for garbage collection and, disposal not shown by
the Public Records.
G. Unpatented mining claims, and all rights relating thereto; reservations and xptions in United States
Patents or in Acts abihorizing the issuance thereof-, Indian tribal codes or regulations, Inifian tredy or
-aboriginal rights, including casements or equitable servitudes.
H. Water rights, el -rim or title, t o water.
SPECIAL EXCEPTIONS:.
1. EASEMENT AND THE TERMS AND CONDITIONS THEREOF:
GRANTEE. PACIFIC NORTMMST BELL TELEPHONE
COMPANY
PURPOSE: TELEPHONE LINES AND RELATED RIGHTS
AREA AFFECTED: THE -SOUTH 32 FEET OF THE EAST 20
FEET AND THE SOUTH 5 FEET
RECORDED: AUGUST 7, 1967
RECORDING NUMBER: 1978007
2.. KASEMENT.AND THE TERMS AND CONDITIONS THEREOF:
WPM 10/25/07 bk
micAGo. TrrLE iNsuRANcE compANY
SCHEDULE B
(Cwtinurd) PolicyNo: 005303651
SPECIAL EXCEPTIONS
GRANTER:
CITY OF EDMONDS.
PURPOSE:
LOOP DETECTORS AND AN ELECTRICAL
JUNCTION BOX
AREA AFFECTED:
A PORTION OF -THE SOUTHEAST CORNER
RECORDED:
OCTOBER 10, 1989
RECORDING NUMBER:
8910106541
3. DEED OF TRUST TO SECURE AN INDEBTEDNESS:
GRANTOR: MURPHY BUILDING COMPANY, INC., A
WASHINGTON CORPORATION
TRUSTEE: WASHINGTON SERVICES INC, A
WASHINGTON CORPORATION
BENEFICIARY: WASHINGTON FEDERAL SAVINGS
AMOUNT: $ 910,000-00
DATED: DECEMBER 28, 2007
RECORDED: DECEMBER 21, 2007
RECORDING NUMBER: 200712210148
Loan Policy Endorsements: ALTA 2006'(6-17-2006) EXTENDED; ALTA 9;
ALTA 22; ALTA 8.1
Owner's Policy' Endorsements: ALTA-2006.(6-11--2006) STANDARD
.W� 10/23/07 bk
&AW1100
7 * 001
When recorded return to:
MURPHYBUILDING CO.
20628 76TH AVENUE WEST
KDMONDS, WA *
Exrow No.-=14546
IN111111111111111
Blip. ink:
Statutory Warranty Deed
THE GRANTOR WILLOWDALF, BUILDING LLC, A Washington Lmfted Lability Company for and
m cormclesulton or Ten Dollar3 and other valuable cousiderabon m had pani, cwvqs ad warrants to
MURPHY BUILDING COMPANY INC� A Wobuilgles Corporatwo 60 folbwmg d=bcd tea estate,
sguated m *A County of`SNOHOMISH, State ofWashingm
PORTION LOT 10 WILLA)WDALE TRACTS IWn
LOT jo OF WtLLOWDALE GARDENS DIVISION NO. 1. ACCORDING TO THE PLAT THEREOF,
RECORDED IN. VOLUME 10 OF PLATS. PAGE 72,RECORDS OF SNOHOMISH COUNTY,
WASHINGTON;
EXCEPT THE WEST 318 FEET THEREOF.
SITUATE IN THE COUNTY or SNOHOMISH, STATE OF WASHINGTOM
SUBV= TO CASEMENT, COVENANTS, CONDITIONS, RIMTRICTiONS AND RESERVATIONS
OF RECORD.
TaxPamell4mber(s) 01*1434X"10-00
Dattd this 17TH day of December. 2W7
STATE OF WASHINMN I a
COUNTY OF OWPANWA5�
153 0 �JQ
INSURED BY
CHICAGO TITLE,
WILLOWDALE BUILDING LLC
Jf�k D. MIA AA14AGER
I C=* do I lmw or hava "uWk" cvKimw that JACK IL FUNM MANAGER 13 do who
appma bdbm me, -and mud person acknowb*W 110 HE =Vcd thn Insum"m 00 081h SWIM d%d HE 8
andwrized to execute the mmmrd and s&wMoftW d a dia MANAGER of WILLOWDALE BUILDING
LAX to be ft five and voluntary act ofsuch party Ibr &a uses and purposm owntsowd in do msm=
Dmd Deeem
VmmoFwmSt)W1wA Rev 2UM LPS4045 (64)
Page I of I
11/07/2007 IG 09 FAX
3 V3
36
CHICAGO TITLE INSURANCE COMPANY
A.L.T.A. COMMITMMNT
SCHEDULEB
(Continued)
OrdcrNo.: 5303651
Your No.:
SPECLA1 EXCEMONS
f 57JEASEMENT AND THE TERMS AND CONDITIONS THEREOF:
GRANTEE: PACIPIC NORTHWEST BELL TELEPHONE
COMPANY
PURPOSE: TELEPHONE LINES AND RELATED RIGHTS
AREA AFFECTED: THE SOUTH 31 FEET OF THE EAST 20
FEET AND THE SOUTH 5 FEET
RECORDED: AUGUST 7, 1967
RECORDING NUMBER: 1978007
EASEMENT AND THE TERMS AND CONDITIONS THEREOF:
GRANTEE: CITY OF EDMONDS
PURPOSE! LOOP DETECTORS AND AN ELECTRICAL
JUNCTION BOX
AREA AFFECTED: A PORTION OF THE SOUTHEAST CORNER
RECORDED: OCTOBER 10, 1989
RECORDING NUMBER:' 0910100541
PIZ
7. FIRST DEED OF TRUST, ASSIGNMENT OF RENTS, SECURITY AGREEMENT AND
FIXTURE FILING THE TERMS AND CONDITIONS THEREOF�
GRANTOR: WILLOWDALE BUILDING LLC, A
WASHINGTON LIMITED LIABILITY COMPANY
TRUSTEE: FIRST AMERICAN TITLE INSURANCE CO.
BENEFICIARY: FIRST MUTUAL BANK
AMOUNT: $ 995,000.00
DATED: APRIL 16, 2002
RECORDED: APRIL 26, 2002
RECORDING NUMBER: 200204260343
LOAN NUMBER: 71-427664-02
THE AMOUNT NOW SECURED BY SAID DEED OF TRUST AND THE TERMS UPON WHICH
THE SAME CAN BE DISCHARGED OR ASSUMED SHOULD BE ASCERTAINED FROM THE
HOLDER OF THE INDEBTEDNESS SECURED.
8. ANY CONVEYANCE OR MORTGAGE BY WILLOWDALE BUILDING LLC, A WASHINGTON
LIMITED LIABILITY COMPANY, MUST BE EXECUTED IN ACCORDANCE WITH THE
LIMITED LIABILITY COMPANY AGREEMENT AND BY ALL THE MEMBERS, OR
�LTACMS;/MM/OM
RESUS
SEP 2 3 2008
BUILDING DEPARTMIEW
CRY OF EDMONDS
11/07/201)7-116 03 FAX 007/035
C141CAGO TITLE INSURANCE COMPANY
A.L.TA. COMMITMENT
SCBF-DULE B
(Continued)
(�derNo.: 5303651
our No.:
SPECLAJ, RXCEPTIONS
EVIDENCE MUST BE SUMMITTED THAT CERTAIN DESIGNATED MANAGERS/MEMBERS
RAVE BEEN AUTHORIZED TO ACT FOR THE LIMTTED LIABILITY COMPANY.
9. TERMS AND CONDITIONS OF THE LIMITED LIABILITY COMPANY AGREEMENT FOR
WILLOWDALE BUILDING LLC, A WASHINGTON LIMITED LIABILITY COMPANY.
NOTE: A COPY OF THE LIMTTED LIABILITY COMPANY AGREEMENT, AND
AMENDMENTS THERETO, IF ANY, MUST BE SUBMITTED.
10. THE PROPOSED
CONVEYANCE MUST BE AUTHORIZED BY RESOLUTION OF THE
DIRECTORS OF THE FOLLOWING NAMED CORPORATION AND A COPY
SUBMITTED:
MURPHY BUILDING COMPANY,
INC., A WASHINGTON CORPORATION
11. THE LEGAL DESCRIPTION IN THIS COMKITMNNT IS BASED ON IN70RKATION
PROVIDED WITH THE APPLICATION AND THE PUBLIC RECORDS AS DEFINED IN THE
POLICY TO ISSUE. THE PARTIES TO THE FORTHCOMING TRANSACTION MUST
NOTIFY THE TITLS INSURANCE COMPANY PRIOR TO CLOSINC IF THE DESCRIPTION
DOES NOT CONFORM TO THEIR EXPRCTATIONS.
END OP ScH3DvL13 B
NOTE A:
COUNTY RECORDS INDICATE THAT THE ADDRESS OF THE IMPROVEMENT LOCATED ON
SAID LAND IS:
20628 - 76TH AVENUE WEST
EDMONDS, WASHINGTON 98026
NOTE 5:
EFFECTIVE JANUARY 1, 1997, DOCUMENT FORMAT AND CONTENT REQUIREKENTS
HAVE BEEN IMPOSED By WASHINGTON LAW, FAILURE TO COMPLY WITH THE
FOLLOWING REQUTREMENTS MAY RESULT IN REJECTION OF THE DOCUMENT BY THE
COUNTY RECORDER OR IMPOSITION OF A $S0.00 SURCHARGE.
FIRST PACE OR COVER SHEET:
3" TOP KkRCTN CONTAIMIMC 140THINO EXCEPT THE RETURN ADDRESS.
I" SIDE AND BOTTOM MARGINS CONTAINING NO MARKINGS OR SEALS,
TITLE(S) OF DOCUMENTS.
RECORDING NO. OF ANY ASSIGNED, RELEASED OR REFERENCED DOCUMENT(S).
GRANTORS NAMES (AND PAGE NO, WHtSE ADDITIONAL NAMES CAN BE FOUND).
C0ACMU;/fkDA/QM
11/07/200! 18 09 FAX li� 008/035
0
0
CHICAGO TITLE INSURANCE COMPANY
A.L.T.A. COMMITMENT
SCHIEDULE B
(Continued)
OrderNo.: 5303651
Your No.:
SPIECLkL EXCEPTIONS '
GRANTEES NAMES (AND PAGE NO. WHERE ADDITIONAL NAM!ES CAN BE FOUND).
ABBREVIATED LEGAI, DESCRIPTION (AND PAGE NO. FOR FULL DESCRIPTION),
ASSESSOR'S TAX PARCEL NUMBER(S).
RETURN ADDRESS (IN TOP 3-1 MARGIN).
**A COVER SHEET CAN BE ATTACHED CONTAINING THE ABOVE FORI-IAT AND DATA
IF THE FIRST PACE DOES NOT CONTAIN ALL REQUIRED DATA.
ADDITIONAL PAGES:
1" TOP, SIDE AND BOTTOM MARGINS CONTAINING NO MARKINGS OR SEALS.
ALL PAGES;
NO STAPLED OR TAPED ATTACHMENTS. EACH ATTACHMENT MUST BE A SEPARATE
PAGE.A.LL NqTARY AND OTHER PRESSURE SEALS MUST BE SMUDGED FOR
VISIBILITY.F'ONT SIZE OF 8 POINTS OR LARGER.
THE FOLLOwING MAY BE USED AS AN ABBREVIATED LEGAL DESCRIPTION ON THE
DOCUMENTS TO BE RECORDED TO COMPLY WITH THE REQUIREMENTS OF RCW 65.04.
SATO ABBREVIATED LEGAL DESCRIPTION IS NOT A SUBSTITUTE FOR A COMPLETE
LEGAL DESCRIPTION WHICH MUST ALSO APPEAR IN THE BODY OF THE DOCUMENT;
PORTION LOT 10 WILLOWDALE TRACTS 10/72
ED/ DS
CLTACM&2/RnA/%W
11/07/2007 16 10 FAX
3-
O,KNOW ALL MEN BY THESE PRESENTS:
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FOR IN CONSIDERATION of mutual benefits and other valuable
consideration, the undersignet) do hereby 9-�ant and convey to the
CITY OF EDMONDS, an easement for the installation of loop detectorg
POW.
and an electrical junction bo)i for a traffic signal to be installed
at the intersection of 7dth Avenue Wait and 208th S.W.; this
easement shall include --.he right zw enter upon the property and
Psr(Ozm construction during the original construction and therefter
As needed Lor maintenancc and repair. The lands affected by said
aassitent are described an Exhibit "A, attached hereto.
All work performad under this easement shall be peformed with
all reasonable dispatch wit h %hg least amount of interruption of
traffic along the driveway on the subject property as is reasonably
poselble. Whenever any work Is performed, the property will be
immediately restored to an equal or better condition than it was
immediately prior to such uvrk.
The City agroes to hold grantovs, their successors and assigns
harmless from any liability to any person on account of the
presence of the GaBememt facilities and/or work being performed an
the subj ct property under the aforesaid easement.
Dat:d: 1909,
1`01:k S-IAN ASSOCIATES,
A parlsership
alikit Or WASH114GTON )
)SS.
COUNTY OF SNOHOMISH I
I hereby certify that I know or
th a t 'AlAIA. AA — 1 19" 74
- �jflt" k'"120-2$ eAe&
and acKnowleG9 t to Da t
have satisfactory evidence
signed this instrument
roe and voluntaryfact for the
%M$& &Ad pur $as r%entioned in t i
Dated trig ;L_ day of Fs� A strumInt. A
LAfal h 1209.
CITY OF 0!;\1'iV4DJ-
tic,' KOTARV PV8LJC,iR Und fujt 0!. $wt I
C11V cle;li 11f withbinrl oso ieka al 42710'r'
PA Box 5030 1
i;3J
Lynniv000, WA
2 9 no 6
'�91 ()100 541
11/07/200.7 16 10 FAX
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u go-st limi—I nr
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CITY OF ;.Y!.:,'W00rJ
citv clellt
P.O. box 5030
LVnn*000. WA 05040-5005 2 2 7 1. PAGE 2 9 37
910 100 5 41
HERMAN Robert M. Herman, P.E., P.T.O.E., Owner
TRAFFIC ENGINEERING
T E C H N I C A L
Date: October 13, 2008
From: Robert M. Herman, P.E., P.T.O.E.
Herman Traffic Engineering
To: Bob Murphy
Murphy Building Company, Inc.
M E M 0 RA N D U M
Subject: Willowdale Townhomes
76t' Ave. W./208t' St. S.W. Intersection Assessment
The proposed Willowdale Townhomes is a redevelopment of an existing office building site
located on the west side of 76th Ave. W. at the signalized intersection of 208tt, St. S.W. in the
City of Edmonds. Previously, ingress to the site was off of 76th Ave. W. just north of 208 1h St.
1h th
Southwest. Egress from the site was via the west leg of the 76 Ave. W./208 St. S.W.
signalized intersection in an exit only configuration.
The existing 76th Ave. W./208uSt. S.W. intersection is a four -legged intersection. The north
and south legs consist of four lanes, two northbound and two southbound. The northbound
approach consists of a thru only lane and a right turn only lane. The southbound approach
consists of a left/thru shared lane and a thru only lane. The east leg consists of three lanes, a
left turn only lane, right turn only lane and a receiving lane. The west leg is a one lane
left/thru/right shared lane which is an exit only from the existing, project site.
The existing traffic signal system is an actuated, permanent steel mast arm type system. The
existing traffic signal phasing is protected/permissive for the southbound left turn movement
and the eastbound and westbound approaches are split phased, meaning they operate
completely independently of one another.
The proposed Willowdale Townhomes site plan shows closure of the access north of the
intersection and modification of the exit only approach to the signalized intersection to allow
entering traffic as well as exiting traffic. The total width of the revised access will be fe ESUB
The intersection can be modified to accommodate the proposed two-way site access
configuration with the following comments and changes as shown on the attached figure: DEC 0 12008
1. The existing thru only arrow pavement markings on the southbound approach (c NaG 6ENT
lane) shall be modified to be thruffight shared arrows or removed entirely. The AT' DAMON' S
shared arrow pavement markings on the inside lane shall remain. Any existing ground -
mounted lane use control signage on the southbound approach shall be modified
accordingly.
15324 Southeast 133� Court, Renton, Washington 98059 . 425-277-1740 tel - 425-277-5718 fax hre@comcast.ner
bTREET FILE
*4
76'h Ave. W./208" St. S-W
October 13, 2008
Page -2-
Intersection Assessment
HIE
2. The existing left only arrow pavement markings on the westbound approach (inside
lane) shall be modified to be left/thru shared arrows (total of two, but only one shown on
figure). The right only arrow pavement markings in the curb lane shall remain. Any I
existing ground -mounted lane use control signage on the westbound approach shal be
modified accordingly.
3. The existing traffic signal heads facing the eastbound approach (site access) meet
MUTCD criteria for cone of visibility, being well under the 20 degree threshold at 1
degree (inside head) and 8.5 degrees (outside head).
4. Install 24"x36" RI 0-1201 "LEFT TURN MUST YIELD" sign on signal mast arm adjacent
to the inside signal head.
5. Replace existing signal mast arm -mounted sign with 30"x36" R3-6 left/thru shared lane
use control sign.
6. Install approximate 20 feet of double yellow centerline, preferably consisting of yellow
raised pavement markers, to discourage entering vehicles from crossing over the
outbound traffic signal detector loop on the site access and inputting a false call into the
traffic.signal controller.
7. Install new induction loop vehicle detector per City standards. The loop should be
centered in the existing lane of the site access. Its location along the access will be
determined by the pedestrian crossing location and the stop line.
8. The existing signal standard on the northwest comer of the intersection will be close to
the new traveled way for the site access. Use AASHTO guidelines for clearance from
the traveled way to the face of the signal standard. In addition, use ADA guidelines to
ensure adequate ADA passage around the signal standard.
9. Remove existing thru only arrow pavement marking.
10. Remove existing left turn prohibition traffic sign from signal standard.
11. Remove existing "DO NOT ENTER" sign and post.
12. Modify or replace existing inside signal head to create the following signal indications
from top to bottom (all 12" indications): red ball, yellow ball, green ball, green,left turn
arrow. Ensure signal head clearance to roadway is a minimum 16.5 feet, or City
standard clearance, whichever is greater.
13. Modify or replace existing inside signal head to create the following signal indications
from top to bottom (all 12" indications): red ball, yellow ball, green ball, green left turn
arrow. Ensure signal head clearance to roadway is a minimum 16.5 feet, or City
standard clearance, whichever is greater.
Please contact me at 425-277-1740 or hte(cD-comcast.net if you have questions or if I can
provide additional information.
15324 Southeast 133- Court, Renton, Washington 98059 425-277-1740 rel - 425-277-5718 fax . hte@comcast.ner
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2.12th 5f
dBaCH TH&FNC CONSULT&HYS
TRAFFIC ENGINEERING *TRANSPORTATION PLANNING
2802 WETMORE AVE. - SUITE 220 - EVERETT, WA 98201 - PH: (425) 339-8266 - FAX: (425) 258-29221
January 3, 2008 APPROVED AS NOTED
E
ff RING
Mr. Dave Gebert, P.E.
City of Edmonds
Date:
1215"'. Avenue N
Edmonds, WA 98020
Re: Murphy Townhomes (17 Townhome Units), 76 1h Avenue W
City of Edmonds Traffic Impact Analysis, GTC #07-354
Dear Mr. Gebert:
Gibson Traffic Consultants (GTC) has been retained to provide a traffic study for the
proposed Murphy Townhomes residential development in the City of Edmonds. This
study summarizes traffic generation, access sight distance and traffic impact fee
information per the City's guidelines for developments generating less than 25 peak -hour
trips. This, study has been organized in the manner of the SEPA Traffic Impact
Requirements for the City of Edmonds.
DEVELOPMENT SITE DESCRIPTION
The development is proposed to consist of 17 townhomes. There is an existing medical -
dental office on the site which will be removed and credited towards the developments
trips. The square footage for the existing building was obtained from the Snohomish
County Online Property Information website and it shows there to be 14,068 SF.
The development site is located at 20728 76 1h Avenue W, Edmonds, Washington. A site
vicinity map has been included in Figure 1. The proposed residential development is
anticipated to begin construction in the Fall of 2008 with expected completion in the Fall
of 2009. The proposed site access is to be located opposite 208'h Street SW on the
property's southern property line.
TRIP GENERATION
h
Trip generation rates were obtained from the ITE Trip Generation, ;� Edition 2003. The
following land uses were used to determine the number of trips that will be generated by
the development: Land use code (LUC) 230 townhome/condominium and LUC 720
medical -dental office. The average trip generation rates for each land use code were used
to determine the trips generated. The existing medical -dental office generates more trips
COUNTS/SURVEYS - SITE IMPACTS - LOS ANALYSIS - EIS - HEARINGS - SAFETY - SIGNALS - PARKING
E
Mr. Dave Gebert, P.E.
January 3, 2008
Page 2
than will be generated by the 17 townhome units. The development will therefore result
in 409 ADT with 43 PM Peak -Hour trips (8 inbound/35 outbound) being removed
from the road system. A surnmary of the trip generation has been included in Table 1.
The trip generation calculations are included in the attachments.
SIGHT DISTANCE ANALYSIS
The development is proposing to have access onto 76 1h Avenue W, along the south side
of the property, opposite of 208"" Street SW. Therefore, sight distance checks were
performed where the proposed access inte.rsects with 76"' Avenue W. The posted speed
limit along 76h Avenue W and 201h Street SW is 30 mph in the site vicinity. Based on
the American Association of State Highway and Transportation Officials (AASHTO)
sight distance requirements for a 30 mph posted speed limit, the required stopping sight
distance is 200 feet and the required entering sight distance is 335 feet. The sto i
,pping
sight distance was measured from the centerline of the roadway to an object 2 feet in
height from an assumed driver eye height of 3.5 feet. The entering sight distance was
measured from 10 feet back of the pavement at an assumed driver eye height of 3.5 feet
to another assumed driver eye height of 3.5 feet.
Where the proposed access intersects with 760'Avenue W sight distances extend beyond
335 feet toward both the north and south and also to the east. The proposed
development accessing at the intersection of 76t" Avenue W and 208"' Street SW win
satisfy the safe stopping sight distance requirements per the City of Edmonds'
guidelines.
TRAFFIC IMPACT FEES
Traffic impact mitigation payments to the City of Edmonds are based on Edmonds Road
Impact Fee Rate Study Table 4 Impact Fee Rates. The information in the table is based
on ITE Trip Generation, 6 1h Edition (1997). The trip rate for the condominium/townhome
and medical office portion of the development was calculated on the information in the
newer ITE Trip Generation, 7h Edition (2003).
The existing medical -dental office is credited towards the developments mitigation
payment using the same mitigation fee methodology. With this credit, the development
would not be required to pay a traffic impact fee to the City of Edmonds since it will not
generate any new trips. The mitigation calculations have been summarized in Table 2.
08010H
I RAFFIC
COCHOULTANVa
Mr. Dave Gebert, P.E.
January 3, 2008
Page 3
GTC trusts that this memorandum and attachments adequately address the traffic impacts
of the ' proposed Murphy Townhomes residential development. If you have any questions
or comments, please contact GTC at (425) 339-8266.
Sincerely,
GIBSON TRAFFIC CONSULTANTS, INC.
Matthew J. Palmer, P.E.
Traffic Engineer
Attachments
XC: John Murphy, Murphy Building Company, Inc.
0
C
C
E)) PIRES 8-13- Z;;E-
aRAFFIC
COCIHOULMH70
GIBSON TRAFFIC CONSULTANTS TRAFFIC IMPACT STUDY
GTC #07-354
MURPHY TOWNHOMES LEGEND
17 TOWNHOME UNITS PROJECT SITE
CITY OF EDMONDS
FIGURE 1
SITE VICNITY
MAP
0
Murphy Townhomes
GTC #07-354
TABLE I
TRIP GENERATION SUMMARY
Proposed Land Use
SIZE
Average Daily
Trips
PM Peak -Hour
nbound
Outbound
Townhomes - Residential
17 Units
99.62
9
6
3
Medical Office - Commercial
-14,068 SF
-508.28
-52
-14
-38
TOTAL
............
-408.66 1
-43
-8
-35
C14ORT NOT IN)ECE-5,569'y Slpor-e t-CS5
.114 A N aS Pc -AK HouP. TAIRS
6f-rjf WTC-0-
RAN&I'C".
70
Murphy Townhomes
GTC #07-354
TABLE2
MITIGATION SUMMARY
ITE
—Code
ITE Land Use
Category
Trip
Rate
Trip Length
Factor
% New
Trips
Net New
Trips per Unit
Impact Fee
per Unit
Unit
Total
230
Condominium/Townhome
0,5-!�50
1 4 1. 15
100%
0-,&@' 0. 61
$07F,5-�
17
$ 7,763.37f
720
Nedical Office (Removed
�,,,71
V 1.5 0
100%
1 -5
$ -4,2.6-ff2
1 -14.068
1 $ (59,946.881: i
3.66- ij196,001
Total
1$'.(52,183.51)"
I Values from the latest ITE Trip Generation, 7th Edition (2003).
0
�,P06 ), 0
f
5.4�' 9
� (_50'sill 4,11)
aUDo- 80H
RAFFIC
coo H 61 U L' 7 1% 41 T 0
Murphy Townhomes
GTC #07-354
Trip Generation for: Weekday
(a.k.a.): Average Weekday Daily Trips (AWDT)
NET EXTERNAL TRIPS BY TYPE
IN BOTH DIRECTIONS
DIRECTIONAL ASSIGNMENTS
TOTAL
PASS -BY
DIVERTED
NEW
pASS_BY
DIVERTED1
NEW
Gross Trips Internal
Crossover
LINK
I
LINK
LAND USES
VARIABLE
ITE
LU
Trip
%
%
In+Out
% of
Gross
Trips
In+Out
In+Out
% of
Ext.
In+Out
% of
Ext.
In+Out
In+Out
M-4O9
code.
Rate
IN
OUT
(Total)
Trips
(Total)
(Total)
Trips
(Total)
lm_j
Trips
(Total)
(T otal)
In
Out
In
Out
In
Out
Townhome/Condo
17 units
230
5.86
50%
50%
99.62
'0%
0
100
00/0--
0%
0
1 100
0
1 0
0
0
Medical -Dental Office
-14.068 ksqft
720.
36.13
50%
50%
-508.28T
0%
0 I
-508
0%
0
0%
0
-50
0
0
0
0
17rotals
-408.66
11Z11
F/ IIAI
0
-409
0 1
I/
-0
0
0
0
1 0
0
Murphy Townhomes
GTC #07-354
0
Trip Generation for: Weekday, Peak Hour of Adjacent Street Traffic, One Hour between 7 and 9 AM
(a.k.a.): Weekday AM Peak Hour
NET EXTERNAL TRIPS BY TYPE
IN BOTH DIRECTIONS
DIRECTIONAL ASSIGNMENTS
TOTAL
PASS -BY
DIVERTED
NEW
PASS -BY
DIVE TED
NEW
Gross Trips Internal
Crossover
LINK
LINK
LAND USES
VARIABLE
ITE
LU
Trip
%
I %
In+Out
%ol
Gross
Trips
In+Out
In+Out
% of
Ext.
In+Out
I
% of
Ext.
In+Out
In+Out
d-28
In
I
code.
Rate
IN
OUT
(Total)
, Trips
(Total)
(Total)
,
Trips
(Total)
Trips
(Total)
(Total)
Out
In
Out
In
Out
Townhome/Condo
17 units
230
0.44
17%
83%
7
0%
0
7
0%
1 - 0-1
0%
0
7
0
0
0
0
—,
Medical -Dental Office
-14.068 ksqft
720
2.48
79%
-35
1 0—%
0
-35
0%
0
0%
0
0
0
0
0
-28
7
A6
Votals
Z11A
-28
V1
,��1111A
- 0
0
1 0
1 0
1 0
1 0
1 -27
I
0
Murphy Townhomes
GTC #07-354
Trip Generation for: Weekday, Peak Hour of Adjacent Street Traffic, One Hour between 4 and 6 PM
(a.k.a.): Weekday PM Peak Hour
NET EXTERNAL TRIPS BY TYPE
IN BOTH DIRECTIONS
DIRECTIONAL ASSIGNMENTS
TOTAL
PASS -BY
DIVERTED
NEW
PASS -BY
DIVERTED
NEW
Gross Trips Internal
Crossover
LINK
LINK
LAND USES
VARIABLE
ITE
LU
Trip
%
%
In+Out
% of
Gross
rips
In+Out
In+Out
% of
Ext.
In+Out
% of
Ext.
In+Out
In+Out
1
In
code.
Rate
IN
OUT
(Total)
Trips
(Total)
(Total)
Trips
(Total)
Trips
(Total)
(Total)
Out
In
Out
In
Out
Townhome/Condo
17 units
230
1 0.52
67%1
33%
9
1 0%
0
9
0%
0
— 0 -1
0%
0 1-9
0
0
0
0 1
6
.Medical -Dental Office
-14.068 ksqft
720
3.72
27%1
73%
-52
0
0%
W
0
0%
0�
52
0
0
0
0 1
-14
17rotals
-43
MO%
—
0 _J
E-52
-43
'3
0
—LLJ
0
1 -43
1 0
1 0
=71
Id
0
L)JJVJJVJJJJC)1J %-,VU11Ly, YY Z-1 Z-k0a%,00V1 I al;,�aLa
1 ",5� 1 %J.L �
Snohomish....no Government Information & Services
County4*
- Washington
* R E A L * Property Information
County Home Assessor Home Treasurer Home Information on which Dep
I --grtmen� to contact
Please view Disclaimer If you have questions, comments or suggestions, please Contact Us.
Date/Time:1/2/20088:20:13AM Answers to Frequently Asked Questions about Parcel Data (opens as new window)
Return to Property Information Entry page
Parcel Number 00614300001000 Prev Parcel Reference 61430000100003
1 View ALap of this parcel (opens as new window)l
General Information
Taxpayer Name 11 Address (contact the Treasurer if you have questions)
MURPHY BUILDING CO INC 116203 202ND ST SW --- LYNNWOOD, WA 98036-6008
If the above mailing address is incorrect and you want to make a change, see the information on Name and Address Chan es
Owner Name 11 Address (contact the Assessor if you have questions)
WILLOWDALE BUILDING LLC 1112207 NE 8TH --- BELLEVUE, WA 98005
If the above name and address is incorrect due to a recent sale, please see the information on N.ame-and Address Chan es After a
Sale
Street (Situs) Address (contact the Assessor if you have questions)
20628 76TH AVE W --- EDMONDS, WA 98026-6806
Parcel Legal Description
WILLOWDALE GARDENS DIV I BLK 000 D-00 - LOT 10 LESS W1/2
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Treasurer's Tax Information
Taxes For answers to questions about Taxes, please contact the Treasure.r's office. (opens as new window)
2007 Taxes for this parcel $14,038.72
(Taxes may include Surface Water Management and/or State Forest Fire Patrol fees. LID charges, if any, are not included.)
To obtain a duplicate tax statement, either download our Tax Statement Request form or call 425-388-3366 to request it by
phone.
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Assessor's Property Data Characteristics and Value Data below are for 2007 tax year.
Please contact the Treasurer's office for answers to questions about Taxes (opens as new window)
Por questions ONLY about property characteristics or property values (NOT taxes),
olease contact the Assessor's Office
Property Values Values do not reflect adjustments made due to an exemption, such as a senior or disabled persons exemption.
Reductions for exemptions are made on the property tax bill.
Tax Year 2008 Market Land $992,200 Market Improvement $694,5001 Market Total $1,686,700
a-0 —to-toop—gEpage
Valuation and Property Tax History
View jjisto[y (opens as new window)
ittp://web5.co.snohomish.wa.us/propsys/Asr-Tr-Propinq/PrpinqO2-ParcelData.asp?PN=00614300001 OOO&G... 1/2/2008
X ar,�, L. V1 L
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'Property Characteristics
Tax Code Area (TCA) 00217 View Taxing Districts for this Parcel (opens as new window)
Use Code 651 Medical & Other Health Services
Size Basis ACRE Size 0.95 (Size may include undivided interest in common tracts and road parcels)
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Property Structures
Type Yr.Bullt Structure Description
Commercial 1974 GENTLE DENTAL CENTER View Structure Data (opens as new window)
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Property Sales since 7/31/1999
Explanation of Sales Information (opens as new window)
Sales data is based solely upon excise affidavits processed by the Assessor.
Transfer Receipt Sales Price Excise Deed Grantor (Seller)
Date Date Number Type
4/25/2002 4/26/2002 $1,437,600 368564 W VANDERSCHELDEN DALE L &
ELIZABETH
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Property Maps Township/Range/Section/Quarter, links to maps
Neighborhood 5603000 Explanation of Neighborhood Code (opens as new window)
Grantee (Buyer) Other
Parcels
WILLOWDALE BUILDING No
LLC
Township 27 Range 04 Section 19 Quarter SE Find parcel maps for this Township/Range/Section
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:Snohomish....ne Government Information & S'ervices
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Washington
Structure Information
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General Description
ParcelNumber 00614300001000 (coi)
Structure Class Commercial
Structure Use Medical Office
Structure Type GENTLE DENTAL CENTER
Year Built 1974
Features
Roof Cover BuiltUp
Units 0
Floor Area
Floor B Base SF 7,052 Sprinkler SF 7,052 Heated SF 7,052 Air Cond SF 7,016
Floor 1 Base SF 7,016 Sprinkler SF 7,016 Heated SF 7,016 Air Cond SF 7,016
Garage(s) & Carport(s) P&6
None
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http://web5.co.snohomish.wa.uslpropsyslAsr-Tr-PropinqlPropinfoO5-StructData.asp?parcel=00614300001 00... 1/2/2008
208TH ST SW
I M__`�OFFICE COMMUNIC./,_�"
j NS
DATE Januam 30 19 75
TO Leif b0l"I"REET FILE Rom
Bill
SUBJECT: Stevens Dental Clinic - 76th Avenue W.'at 208th St.' S.,W.
Per your request, a field investigation was made on 1/29/75. 1 recommend
the following action be taken by the property owner:
1. Contact property owner to the south to have the1ree which
is causing a sight problem relocated.
2. Also, relocate "Entrance" sign for better sight distance.
3. Owner should buy & install "STOP" sign for south.exit.
4. City can study the on street parking -in the area.
If traffic problems still occur after taking the above steps, the south
driveway should be used for ingress only.
WJN:mjr
Attachment: sketch
OWN& 'doNW& .A�
U 1 M L
0 nA
X
a
I'A
CITC-0w)-OFFICE COMMUNIL %.-D, NS
DATE January 24, 19 75 �
TO Leif FROM Mary Jane
SUBJECT: Ingress & -Egress -at Stevens' 'Dental -Clini6.,, -'76th Avenue W-.* 'at 208th'Street S.W.
Jack Wilson of the subject clinic requested a traffic study be made at
the -subject -location.- There -have -been 2 accidents there since the
clinic opened. Could Lynnwood and Edmonds come up with some traffic
signing, painting, Or "No parking" signs etc. to.alleviate the added
congestion this Clini-61s traffic is effecting? Does Lynnwood have
an:� plans for that intersection? -- it is bad enough without the clinic
traffic.
vev r./ 6"A rk' -0 1111er.0,vz
&47 ��-
Ty 0 9/3 09 z
r'ITV r%f Pr1KAr)KIr)Q QHQ1 Q I Irr:KIQr: ADD
I IrATI�K[
Civic Center - Edmonds, Washington 9802W
City Clerk Phone 775-2525
q.TR
INSTRUCTIONS:
• All items must be completed
or application will not be ac-
cepted.
• Sign and return application
with fee. Renewals received
after February 15 must pay
penalty in addition to fee.
NEW BUSINESSES AFTER
JULY 31, 1/2 FEE.
_') U 4L
NAME OF FIRM
MAILING ADDRESS
EET FILE TYPE OF BUSINESS
TE JREASG. LIC. NO.JSPEC Ej (A) HOME OCCUPATION
1 .1 BUSINESSWITH
HtL;t:[Vl NU. DAI h PAIU PRIN 'X' , A
IN SPEC. BOX
J/1 i'%03ig FOR ISSUE OF
FEE PAID PENALTY,PAID CORRECTED
LICENSE WITH
LC' ACTION.
DATE1191f:2
�/ZICENSE NO.
ANNUALFEE AFTER FEB. If
$15.00 $ 22.50
(B) 1 TO 3 EMPLOYEES 1) '3U.UU
BUSINESSWITH $22.00 $ 33.00
4 TO 9 EMPLOYEES
E] (c)) BUSINESS WITH 10 $75.00 $112.50
OR MORE EMPLOYEES
NEW APPLICATION (LA)
0 RENEWAL (L B)
u CHANGE (LC)
(PLEASE MAKE ANY NECESSARY CHANGES) 0 DELETE (LD)
I
e—
C_
')_1
J,� /76 wel�e_
BUSINESS PHONE No. OF EMPLOYEES
NATURE OF BUSINESS W 4-E D
11'1�
OF "-, S E P 9 1982
7
BUSINESS AD ` D : RESS—'— INDIVIDUAL PARTNER&DM0NDST-0HPDBRT.ION
�7-
ok
(S) (P) (C)
OWNERS NAME HOME ADDRESS
z
I- I V A*AJ Z/
HOMEPHONE DATE OF BIRTH PLACE OF BIRTH SOCIAL SECURITY NUMBER
'36,S-. /39Y 15- - a CP - 'K?
EMERGENCY NOTIFICATION (1) NAME& TELEPHONE \T- �, L_ s oli
(PLEASE LIST TWO) (2) NAME & TELEPHONE
-7
7 7re, -�3a
WASHINGTON STATE TAX NOjf APPLICANT'S SIGNATURE
DO NOT WRITE BELOW THIS LINE
STA FF REVIEW: FILL IN LAND USE CODE, UFIR NUMBERS, ZPNING, ETC. CHECK APPROVAL OR DISAPPROVAL, DATE, AND
SIGN. IF DISAPPROVAL, PLEASE COMPLETE "COMMENT" SECTION. ROUTE TO NEXT DEPARTMENT ON LIST.
PLANNING DEPARTMENT DATE
k-APPROVE 0 DISAPPROVE
LAND USE CODE ZONING CODE
S I G N AT U R EA/
CONDITIONAL USE PERMIT
COMMENTS
BUILDING DEPARTMENT DATE
P-'A'PPROVE 0 DISAPPROVE ec
SIGNATURE
Building 0 Hotel/Motel
Permit 0 Apt ' Bldg.
El Office Bldg.
(L)
(A)
(0)
COMMENTS:
CAPACITY: (NO. UNITS, APTS. OFFICES, SEATS, BEDS, STUDENTS)
Occupancy El Restaurant
Group 0 Hosp/Nurs Home
1 V51 School
(R)
(H)
(S)
FIRE DEPARTMENT DATE
APPROVE '0 DISAPPROVE SIGNATURE 5'55� Ot_Q-A-�
U.F.I.R.
COMMENTS:
Of=!$
PO E DEPARTMENT
'W' DATE q-0 42, SIGNATURE
2rAPPROVE 0 DISAPPROVE
If1W
COMMENTS:
','VRLIC WORKS DEPARTMENT
APPROVE 0 DISAPPROVE DATE 9_1 SIGNATURE
COMMENTS:
04 ]=A Cl= 01=1 10K1 "rl-% t�I-rkf r%1 177"1�1
/_v ci
CITY of EDMONDS B ESS LICENSE APPLICATION
Civic Center Edmonds, Washing on 8 MrR
City Clerk Phone 775-2525
EET FILE
CLASSIYEA EFFEC. DATE REASG. LIC. NQ.ISPEC.1
INSTRUCTIONS:
� LIC.
• All items must be completed 13 1
or application will not be ac. RECEI�PT NO. DATE PAID RINT'X' A
cepted. IN SPEC. BOX
FOR ISSUE OF
FEE PAID C
• Sign and return application PENALTY, PAID CORRECTED
LICENSE WITH
with fee. Renewals received 1 .44-4 1 1 1 'LC' ACTION.
after February 15 must pay
penalty in addition to fee.
NEW BUSINESSES AFTER
JULY 31, 1/2 FEE. &EASE MAKE ANY NECESSARY' CHANG
NAME
�111_!NG ADDRESS
L I C E N S E N 0.
ANNUAL FEES
PENALTY AFTER FEB.-IS
HOME OCCUPATION
$10.00 (A)
ADDITIONAL $5.00 0
SMALL BUSINESS
$15.00 (B)
ADDITIONAL $7.50 C3
Business with 10 or
more employees
ADDITIONAL $25.00 0
$50.00 (C)
N NEW APPLICATION- _(LA)
0 RENEWAL (LB)
D CHANGE (LC)
0 DELETE it ni
BUSINESS PHONE
NATURE OF BUSINESS
NO. OF EMPLOYEES
BUSINESS ADDRESS
INDIVIDUAL PARTNERSHIP CORPORATION
UCI (S) (P) P
OWN . ERS I NAME HOME ADDRESS
1-101"i i;�6� DATE OF BIRT
PLAC� F BIRTH SOCI L SECURITY NUMBER
,cAT,6N. 7.
EMERGENCY NOTIF (1) NAME & TELEPHONE
(PLEASE LIST TWO) (2) NAME& TELEPHONE ff
/I x,
WASHINGTON STATE TAX NO. C C eeY41-1-9 0/ APPLICANT'S SIGNATURE
DO NOT WRITE BELOW THIS LIN
STAFF REVIEW: FILL IN LAND USE CODE, LIFIR NUMBERS, ZONING, ETC. CHECK APPROVAL OR
DISAPPROVAL, DATE, AND SIGN. IF DISAPPROVAL, PLEASE COMPLETE "COMMENT"
SECTION. ROUTE TO NEXT DEPARTMENT ON LIST.
PLANNING DEPARTMENT DATE 5-, Z. 3 LAND USE CODE ZONING CODE
IR APPROVE 0 DISAPPROVE SIGNATURE [KIM
CONDITIONAL USE PERMIT
COMMENTS
BUILDING DEPARTMENT DATE 50 Building 0
W-00ROVE E3 DISAPPROVE SIGNATURE Permit Hotel/Motel
0 Apt. Bldg. (A)
11 Office Bldg. (0)
COMMENTS: Occupan ' cy 0 Restaurant (R)
Group Hosp/Nurs Home (H)
CAPACITY: (NO. UNITS, APTS., OFFICES, SEATS, BEDS, STUDENTS) School (S)
if IPE DEPARTMENT DATE '/4a U. F. 1. R.
APPROVE 0 DISAPPROVE SIGNATURE ICU LLSOK)
COMMENTS:
P 0 L2E DEPARTMENT / ( I -I
. ftAPPROVE 0 DISAPPROVE D ATE 62 SIGNATURE
PUBLIC WORKS DEPARTMENT
0 APPROVE 0 DISAPPROVE DATE _4z SIGNATURE
COMMENTS:
PLEASE RETURN TO CITY CLERK
�.A
--amom— C� lz�
9 0 - 19
CITY OF EDMONDsSTREET FILE
250 - 5TH AVE. N. - EDMONDS. WA 98020 - (206) 771-3202
COMMUNITY SERVICES:
Public Works e Planning * Parks and Recreation * Engineering
February 1, 1990
Sindi Harned
Stevens Dental group
20728 - 76th Ave. West
Edmonds, WA 9eO2O'
Dear Ms. Harned:
LARRY S NALIGHTEN
MAYOR
PETER E. HAHN
DIRECTOR
As you know, we have spent a lot of time trying to determine where and
what the problem is that is creating the high consumption. The meter
was replaced to try to solve the problem.
Since you can not find a leak and we can not prove otherwise, I will
allow our billing office to average your account for the period of July
1968 through July 1989 and credit you for any additional charges above
both water and sewer through November 7, 1989, when the meter was
replaced. We will continue to check for high usage of this account.
Should you have any questions on the bill, please call Ilene Larson.
Sincerely,
66-e-41e 1977
V-
Bobby R. Mills
Public Works Superintendent
BM/lk
cc: Ilene Larson
Utility Billing Clerk
#604625/TXTWATER
Incorporated
August 11,A890
Sister Cities International — Hekinan, Japan
itevensDenta?Group
SECEIyEj)
January 18, 1990 A N 2 2 1990'
PUBLIC WORKS ,
Mr. Bobby Mills
City of Edmonds
Public Works Department
200 Dayton Street
Edmonds, Washington 98020
RE: Water Charges For
Stevens Dental Group
Dear Mr. Mills;
Dr. Wilson and I met with Mr. Archie Brena regarding the outcome of
replacing our water meter. Since the meter 'was replaced, our usage of
water registering on the meter had diminished considerably. Mr. 8rena
asked if we had made any modifications to our sprinkler system, repaired
any leaks, etc. to account for the decrease in usage. We have undertaken
no repairs in our office.
Mr. Brena indicated that the old meter was tested and appeared "good".'
However, given that our apparent usage has dropped since the new meter
was replaced, I am writing you in hopes that a credit can be issued on. o&,
account. Mr. Brena indicated that this would be your decision and we feel
that we have over paid on our -account by several hundred dollars.
I look forward to hearing from you at your earliest convenience. Thank you
in advance for your time and consideration.
Sincerely,
Sindi Harne
Administrator
20728-76th Ave. West, Edmonds, Washing�on 98020
Phone (206) 775-3456
COMPLAINTS A BE WRITTEN: NO VERBAL COMPLAOS WILL BE ACCEPTED.
THIS FORM MUST BE COMPLETE.
4 1 V, DATE
ti i KET FILE 0
AUG 9 1990 CITY OF EDMONDS
PM-9 to=ffi. COMPLAINT RECORD
COMPLAINT SUBMITTED BY: e-z - __
N ame: Phone:,'- 7
� �jjjjah L L4 ACf b-cr4, 7 &/- o7 ?3 1
Address:
420125 7 2 6"ju rATRE-E-T+_1LE
ADDRESS OF PROPERTY TO BE INVESTIGATED:-' 'In
Name of Owner: 6+r- vcAS bc,66(
Address: Phone: 3 LIS' 4
0
DESCRIPTION OF COMPLAINT: a 'n
DO NOT WRITE BELOW THIS LINE - FOR CITY USE ONLY
CODE SECTION VIOLATION:
ral
TYPE OF ACTION EXPECTED:
TIME REQUIRED TO INVESTIGATE / ACT ON COMPLAINT:
RESULT OF INVESTIGATION: DATE: TIME REQUIRED:
/2141 Azi t__34 -4:1111 /7
INVESTIGATED BY:
C�
go . 19
*S`TREET FILE
CITY OF EDMONDS
250 - 5TH AVE. N. - EDMONDS, WA 98020 - (206) 771-3202
COMMUNITY SERVICES:
Public Works * Planning e Parks and Recreation * Engineering
December 14, 1990
Kay Gui rl
20805 - 77th Pl. W..
Edmonds, WA. 98020
Re: Fill material from Stevens Dental Clinic parking lot
pushing over back yard fence
Dear Ms. Guirl:
LARRY S. NALIGHTEN
. MAYOR
PETER E. HAHN
DIRECTOR
I have checked with our Code Enforcement Technician, John Bissell, to
see if there are any provisions in the Edmonds City Code that would
help resolve your subject complaint, and according to him, there are
none. As I explained to you earlier, because the subject problem
wasn't brought to our attention during the construction of Stevens
Dental Clinic parking lot, there is nothing the City can do to have the
clinic correct the problem.
If you have any questions, call me at 771-3202, extension 289.
0
Sincerely,
ADDISON L. CHRISMAN IV
Engineering Inspector
ALC/sdt
STVNSDNT/TXTST530
* Incorporated August 11, 1890 0
Sister Cities International — Helkinan, Japan
F I L t
CITY OF DS
250 - 5TH AVE. N. - EDMONDS, WA 98020 - (206) 771-3202
COMMUNITY SERVICES:
1z, Public Works * Planning * Parks and Recreation 9 Engineering
890 . 199.-
December 14, 1990
Kay Gui rl
20805 - 77th Pl. W.
Edmonds, W 98020
Re: Fill material from Stev'ens-pental Clinic parking lot
pushing over back yard fence
Dear Ms. Guirl:
LARRY S. NAUGHTEN
MAYOR
PETER E. HAHN
DIRECTOR
I have checked with our Code Enforcement Technician, John Bissell, to
see if there are any provisions in the Edmonds City Code that would
help resolve your subject complaint, and according to him, there are
none. As I explained to you earlier, because the subject problem
wasn't brought to our attention during the construction of Stevens
Dental Clinic parking lot, there is nothing the City can do to have the
clinic correct the problem.
If you have any questions, call me at 771-3202, extension 289.
Sincerely,
ADDISON L. CHRISMAN IV
Engineering Inspector
ALC/sdt
S-IVNSDN-I/TXTS-1530
d�-�
Al bertf
0 Incorporated August 11, 1890 0
Sister Cities International — Hekinan, Japan
0
STREET FILE
January 1, 1991
City of Edmonds
Director, Engineering Department
250 5th Ave.
Edmonds, WA 98020
Dear Sir,
hecelve7o
JAN 14 1991
FA1r,/AjFrR/Af1.
This letter is written to request review of the handling and response to a
complaint submitted to your office regarding fill and embankment on property
abutting the back side of our lot. In August a written complaint was
delivered to your office as required. Two months later no response to the
complaint had been received. In October I went into your office and talked by
phone with the individual responsible to conduct the investigation of the
complaint. I was told a response to the complaint would be received in two
weeks. No response was received and in November I phoned Mr. Chrisman who
indicated he would provide me with an answer within a few days. Mr. Chrisman
phoned and stated that since there was no complaint regarding the fill and
embankment at the time of original approval and inspection, we had no recourse.
Upon receiving the phone call, I went into the Engineering office and spoke in
person with Mr. Chrisman. I requested that he pdrticularly address the code
dealing with Hazards and provide me a written response to the complaint. This
was promised to be delivered within a short time. Having not received the
written response I called Mr. Chrisman's supervisor and requested follow-up.
Attached is the response I received. I have�a number of concerns�:
The length of time to obtain this response to my original
complaint is excessive.
2. The response does not address the original complaint.
3. Section 7004 of the Uniform Building Code specifically states
that whenever "any excavation or embankment or fill on private
property has become a hazard to ..... or endangers property, the
owner ..... must eliminate the hazard".
4. The fill and embankment have become a hazard in that fill now
extends at least six inches onto our property, an old fence has
been pushed over, and we are unable to build another fence
unless the fill is removed.
5. 1 have no indication that anyone actually came out to inspect
the property in relation to the complaint.
I would appreciate clarification from someone other than Mr. Chrisman.
Sincerely,
� 8 9 0 . 194
0
0
CITY OF EDMONDSSTREET FILE LARRY S. NAUGHTEN
250 - 5TH AVE. N. - EDMONDS, WA 98020 * (206) 771-3202 MAYOR
COMMUNITY SERVICES: PETER E. HAHN
Public Works 9 Planning e Parks and Recreation o Engineering DIRECTOR
January 16, 1991
Kay K. Guirl
20805 - 77th Pl. W.
Edmonds, WA. 98020
Re: Your letter dated January 1, 1991
Dear Ms. Guirl,
P"J"i I It /. /��
It is the City's policy to respond to complaints as quickly as
possible. Sometimes, however, the response time is somewhat slower
than citizens are willing to.accept for one reason or another. I do
agree with you that your complaint should have been handled more
expeditously. I have discussed this with Mr. Chrisman and he has
assured me that responses will be handled shortly after being received
by our office.
Dick Mumma, City Building Official, revisited the site yesterday,
January 15, and will provide you with his official stance on the
situation. I
Feel free to use the City's complaint system in the future. You can be
assured responses by the staff will be handled in a timely manner.
Sincerely,
ROBERT J. ALBERTS, P.E.
City Engineer
ALC/RJA/sdt
GUIRL/TXTST530
'* Incorporated August 11, 1890 o
Sister Cities International — Hekinan, Japan
'E�[Lt BO_k'RD K&Y 2 2, 19 7 4
E 4
STREET
buildinc, and.landscaping plans con-nending him on its design
C3. r>
and compatibility with the site. Mr. Goldsmith stated that
the landscape plans were also very complete and he would
-37-74. MOTION SECO14DED
therefore make a MOTION TO APPROVE ADB
BY '11111 LATOURELL AND CARRIED.
#y1_1'1.AT)B-39-74 S Dental Center - S gning, I landscaping and parking lot
7 t venue West.
r. is s owed slides of the Stevens Dental Center pointing
out that there is substantial mechanical equipment located to
the front of the building that would need to be screened.
Dr. Sogn presented signing and landscaping plans to the
Board for their review. There was considerable discussion
regarding the landscape plan with the question raised as to
how the mechanical equipment would be screened. Dr. Sogn
stated they were proposing a solid evergreen screen in front
of the mechanical equipment that would be trimmed or pruned
to approximately 3-L; ot 4 feet. Mr. Wallis asked if there
was enou-h room in front of the mechanical equipment to
create an earth burm. Dr. Sogn stated that there was some
earth there now, but a burm would not be necessary with the
proposed screening. The Board reviewed the proposed signing
and parking lot lighting and found them to be acceptable.
A MOTION WAS HADE BY 111R. GOLDSMITH AND SECONDED BY 11R. LATOURE,,LL
TO ACCEPT ADB-39-74. MOTION CARRIED.
L",_�B-40-74 William D. Barr - Addition to existing day care building
Maple Bar Ranch (%111L)
Mr. Barr had -previously made a request for construction of
an octagonal building. !4r. Wallis stated that Z-1r. Barr's
request at this time is for an addition to the existing building.
Mr. Wallis showed slides pointing out the location of the
existing building and stating that the existing plants and
shrubs.would not be disturbed. Mr. Barr stated they would
prefer to build the octagonal building, but they had run out
of time in order to provide a new structure before school.
begins in September. There was general discussion regarding
parking with 'fr. Barr stating that the plans will provide
for a drive through whereby the parents. could drivo in, drop
the children off and drive on through. After general discussion
of the landscaping plan, 11R. GOLDKIIT11 �LkDE A MOTION TO ACCEPT
THE PLAIN"FOR ADB-40-74 AS SUBMITTED. SECONDED BY I-11R. LATOURELL
AND CARRIED.
Chairman Bernhoft then referred back to ADB-27-74, Project
Management Associates - Park View Firs for tinai landscape* review.
Jerry Schlatter, representative for Park View Firs, presented
their landscape plan. Ile was commended for sensitive handling
of the landscape plan, particularly the detailed plans presented..
A MOTION WAS 1U0E TO APPROVE THE PLANS FOR ADB-27-74 AS
PRESENTED. MOTION SECONDED AND CARRIED.
BRUSH
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F__77 0
'CITY
o� EDMON
SIREET FILE
PUBLIC WORKS DEPARTMENT JOB
- -
ORDER
_7DATE
REQ U ESTOR: Leif R. Larson WOR K CENTER: Sewer Dent.
PREPARED: 2115/74
REQUESTI-NG
DEPARTMENT 11EAD'S B
JOB ORDER
024-74
r L,
SIGNATURE: 'T
FACILITY:
NUMBER:
DESCRIPTION AND/OR SKETCH OFWORK TO'BE PERFORMED
Install 6"'lateral to-sani , tary sewer�at 76th Avenue W.
and 208th Street.S.W. to
serve the new dental clintic under construction.
Contact Don Beach, Harbor Construction Co., Bellevue, 455-3325 -to coordinate
the lateral location with the building plumbing plan.
Z. Contact General Telephone, Duane Clouse, 775-2335
for deternining location
of telephone duct.
Contact Lynnwood to arrange procedure for connection
into the sewer main.
R IF r r i v E a
MANHOURS
a PC act tia I
estim, d
MATERIAL REQUIRED;_ -
AUTHORIZING SIGNATURE
DATE ASSIGNEV, PUBLIC WORKS DIRECTOR:
DAT� COM P LETE 1) IS INITIALS:
IN l';InA LS
-A
STREETFILE
CITY of EDMONDS PUBLIC WORKS DEPARTMENT
Routing of Building Permit Applications
0
Prop sed Property Ad&ress of� Application: 20728 - 76th Avenue West (Stevens Dental)
DEPARTMEN
COMMENTS
DATE
W A T E R
, ew.' - /0
'173
-S T R E E T
72�-
S E W E R
-;Zill- AC3
,ev
N 0 T E S
4L -
BUILDING
DEPARTMENT COMMENTS
"A Good Customer Is Worthy of Every Consideration"
WESTERW UTILMES SUNd (0.
Waterworks & Sewage Supplies
P.O. BOX 3524 5409 OHIO AVE. SO.
SEATTLE, WASH. 98124 762-7025 SEATTLE, WASH. 98134
• FOR YOUR COMMENTS 0 Fq"OUR INFORMATION
• FOR YOUR APPROVAL 9�<OTE & RETURN
0 TAKE APPROPRIATE ACTION 0 NOTE & FILE
0 CALL ME 0 FOR YOUR SIGNATURE
0 SEE ME 0
COMMENTS:
A/e
Form OAA Rf L.—I Offi. AW 1-- 5. 10k C..bd SMI-. Ymk-6 N.Y. 10710
0
?'BUILDING DEPARTMENT A0plicamit Fill
Inside Heavy I.Ines
PERMIT APPLICATION
UW; PERMIT
ZONE NUMBER
y6T3
ADDRESS
A 6? 7,,1 rl 6
-.NAME (OR NAME OF BUSINESS).
PERMISSIBLE % ACTUAL
LOT COVERAGE LOT COVERAGE
MAILING ADDRESS
PERMISSIBLE HEIGHT PKOPOSED fiblIORT'
CITY
TELEPHONE NUMBLR
-74f 00
ACTUAL LOT AREA TOTAL BLD4G. AREA
REQUIRED YARDS PROPOSED YARDS
FRONT ' SIDE REAR FRONT SIDE REAR
16
0
NAME
ADDRESH
;r> "We Azs
VARIANCE OR CONDITIONAL USE
LEGAL LOT PERMIT NUMBER
YES,. NO -/2-
PLANNING DEPT. APPROVAL DATE:
CITY
TELEPHONE NUMBER
STREET R/W
EXISTING STREET R/W.. FT. DEFICIENCY THIS PROPERTY
COMP. PLAN ST. R/W FT.
04
z
z
W
NAME
REMARKS
A DDRESS
CHECKED BY
CITY
TELEPHONE NUMBER
METER SIZE;j
SERVICE;SIZE
t.
�CLEARANCE
.1
CHECKED BY
.
STATE LICENSE NUMBER
CITY LICENSE NUMBER
REMARKS
. 7—
Legal Description of Property (Show Below or Attach Four Copies)
e�e (
&I ev 1-2a 1 (2 (-Z-1 &
TYPE CONNECTION
VERIFIED. BY
D,�fi A16 �3
PERC. TEST
PERMIT NUMBER
REMARKS
F11! 0 E
CONSTRUCTION STREET IMPROVED
YES NO
GAS
RESIDENTIAL., LINE
NEW
ON -RESIDENTIAL SIGN:
F]
E] RETAINING
DEMOLISH WALL
Q ALTER EXCAVATE' FENCE
OR FILL .......... x .......... Ft!)
PRE -MO swim
ET 1:1 INS11. VE D rool;
SPECIAL INSPECTOR REQUIRED
El YES C] NO
OCCUPANCY OROUP
PLAN CHECKED By
THIS SITE IS LOCATED IN THE CITY
OF EDMONDS. LOCAL SALES TAX
SH 31.04.'
REMARKS
Foundation Permit #730457
NUMBER OF STORIES
NUMBER OF
DWELLING
UNITS
7
NATURE OF WORK TO BE DONE
of
ick rrr—,! org
Ilion Chork No.
ValuaV
Fee —
%, .2 57
R ' ecelpt No.
BUILDING
PLUMBING
EO
PROPOSED USE
Der) V�t / C/I 0 lc�
HEAT & GAS LINE
547
J�LOT PLA'N' (Indicate Building setbacks, abutting streets)
RECEIVEb N
NOVI 5. .1973
4"
FENCE
RETAINING WALL
SWI M*MING POOL,.
DEMO LITION
PRE -MOVE INSPECTION
IN -
ENGINEERING REQUIREMENTS FOR COMMERCIAL
AND APARTME14T BUILDING PROJECTS
Name Stevens Dental Center STMEETFILE
Date November 15, 1973
STREETS AND ACCESS,
1. Right -of -Way. Requirements: None
.2. Road Bed Width: 44' existing
3. Turn Around: None
4. Sidewalks:. . 5' existing
5. Parking Strip: None
6. Access Easements: None
UTILITIES
1. Water.Mains: 8" C.I. existing
2. Fire Hydrants: None
3. Sewers or Septic Tanks: Connection to sani.tary sewer required.
4. Drainage: Install all necessary storm sewers.and drainage facilities
per drainage plan and City Standards. Where drainage is across adjacent
private property, all parties having any ownership interest in the lanids
being developed shall provide, as a restriction on the title running with
the land, that the City of Edmonds shall be held harmless from any and. -al 1�
claims for damages which may be occasioned'to adjacent land by reason of the
construction and operation of the drainage system, unless, releases.of
damages and/or drainage easements are obtained from the other property owners
affected by said drainage. Any -drainage problems created by change of contour
during development must be corrected,. prior to occupancy permits or release
of performance bond. Final approval (or release of bond) will be withheld:
until actual drainage as installed has been inspected by the City Engineer.
0 00
is *0 46 _.
Engineering Requirements for Commll
Apartment Building Projects - Page 2
5. Utility Easements: None
6. Underground Utilities: To*be provided in accordance with Ordinance No. 1387.
Street lighting shall also be 'provided with the necessary street light
standards and underground wiring. Street lighting not required. guilding
serVice to be underground. TOPOGRAPHY
1. Excavation and Grading: Excavation and grading shall conform to the requirements
outlined in Chapter 70 of the.Uniform Building Code, latest adopted edition,
Vol. 1. Where extensive grading and fill are involved in the development, a
grading plan and specifications shall be prepared.
QUOTATION FROM THE CITY CODE REGARDING IMPROVEMENTS
11.02.025(f) Utilities and Street lm�rovements. No building permit shall be
issued for the construction of any buildil-n-gor structure of any kind or
description unless the plans and specifications include the construction for
curbs, gutters, sidewalks, paved streets, necessary water lines, sewer lines, and
storm drainage necessitated by the new construction or improvement, to be built
to applicable City standards, provided, however, if found by the City Engineer
to be impractical to construct at the time of application for said building permit,
construction may be waived by the City Engineer, and in lieu thereof a performance
bond filed with said engineer to cover the estimated cost of construction to City
standards for said improvements, provided further, in areas zoned single family
r4-.sidential at the time of said application for building permit in which the
applicant has received final approval for a plat or sub -division and has compiled
with requirements therein compliance with this subsection shall be deemed by
compliance with the sub -division or plat requirements.
COMMENTS
Rev. April 2t 1971.
A
ea/ V , ) _—) le--' N I
id-i .0 .—OFFICE C.0N,1_11 U (_ N S
0V STREET FILE DATE Noymber 15, 73
TO Harry Whitcutt FROM Bill Nims
Building Official I Engineering
FORM 41 - LITTLE'S
SUBJECT: Stevens Dental Center
The Engineering Department can not approve the permit ap lication until
the following items have been located on the drawings.
1. Sanitary sewer location
2. Storm dewer system
3. Water service & meter location
Nog P49"7s u-nL17Y LPC�Ilcjq
'0'�WNG* AAj.. u-nLxry Lce^
, . Pk TIC"
mj r 0 14 s 11+ 6-) 1%)%--'T (m-14 W
11+ L70' ?EQ M 17
1000� '.
VRMT FILE i%000�
August 22, 1973
Mr. Douglas L4 Jonas, P.E.
Post Office Box 10455
Bainbridge Island, WA 98110
Subject: Harbor Const. Co. Proposed
Building @ 208th & 76tb Ave. W.
Dear Mr. Jonas:
For your information, the sever connection charge in
lieu of assessment for subject property is estimated at
$941.42 plus a $100.00 lateral. In addition to this, there is
a $10.00 permit charge and $25.00 per unit which would have to
be determined after review of the final plans. As all of these
charges would have to be paid at the time a side sever permit
was obtained, this information may be helpful in future planning.
If you have any questions, please feel free to contact
this office.
Yours very truly,
CITY OF EDMONDS
RICHAM H. ALLEN
Assistant City Engineer
rf
VILE
Date: August 17, 1973
N to Director of Nainttnance & rat ' $on Public Works
rrom: City Engineer
Subject: Swer Connection Charpes
LeXal Description: Lot 10 ' Willowdale Gardens, Division No. 1, Volume .10
of plats, page 72, records of auditor of the County of Snohomish, State of
Washington, EXCEPT the West 318 feet thereof.
ThiSLmemo supersedes one previously dated October 8, 1968 which -was prepared
onthe assumptionAhat an apartment was to be built on the property.
4%@W
Developer: Harbor Const. Co'-..
Cwmmly known as: 20-7.-21- 7.6 Owner:
Z.F.1'. Calculation:
(171-16) Z.F.r. . $5.50) z'o 941.42 Connection ree'
Lateral x 0100 100.00 Lateral CharRe
1 4 Uni.t x S 100.00 Trunk Mom*
10.00 Permit
$1,151.42- Total
cc$
srREENr FILE Date: August_17, 'l 973
Now to Director of Maintenance 6. wation PuNic Works
rrvm: City Engineer,
Subj*ctt eAwor Connection Charges
tAx.41 Description: Lot 10, Willowdale Gardens, Division No. 1, Volume 10
of plats, page 72, records of auditor of the County of Snohomish, State of.
Washington, EXCEPT the West 318 feet thereof. -
This -memo supersedes one previously dated October 8, 1968 which was prepared
on the assumption that an apartment was to be built on the proper.ty.
Developer: Har.bor Cqnst. Co.
C�4y kn*" as (honer:
,;2,52 7-2,p- 17-
1.1r.1'. Calculation:
(1,71-16) Z.F.r. I 3g $5.50) 94.1.42 Connection roe
Latera.1 x ($100 100.00 Lateral Charite
4 Unit x 26 100.00 Trunk Charge.
10.00 pemit
$1,151-42- Total
7
re,
0
To: LEIF
From: Rhonda Date,. 8117
0 FOR YOUR COMMENTS 0 FOR YOUR INFORMATION
0 FOR YOUR APPROVAL
0 NOTE & RETURN
0 TAKE APPROPRIATE ACTION 0 NOTE & FILE
0 CALL ME 0 FOR YOUR SIGNATURE
0 SEE ME 0-
COMMENTS: ftlat culacie-U-1
lateral installed to property line
during Phase I of 76th UAB job.
t is
he basis fFor determining)
iinit-, or a clinic ?
I found an old sewer connection memo
which was prepared on the assumiff—lon
that an "artment building was to be
built. I have picked up the same
A 7FF, etc. Thp 1Pqa1-ddP-Rrrintinn iq
the same.
Form OA-4 BY Laurel Office Aid&, 1—. Boo 180. COntuck Station. Yonkers, N.Y. 10710
k.) Ic. -)4 o m - o- �g
41-
4st 77ft) f f
0 M)Pt a., 4
110 lop,
t--4 --4- 4
j j__ i 1
4 4-
1-
___L_ L I
41- -
I
A 0 -
Jeanie McConnell
Engineering Program Manager
City of Edmond�
Public Works Department/Engineering Divis-ion
121 5th Avenue North
Edmonds, WA 98020t
RE: Willowdale Townhomes
76th Avenue West, Edmonds, Washington
City File No. PLN20080001
BCE Job No. 14950 / NS Job No. 9865
REAL ESTATE INVESTMENTS,.LAND DEVELOPMENT, �ROJECT MANAGEMENT
March 18, 2013
COURIER DELIVERY'
n. E . C E tli f E ED
� MAR 19 2013
DEVELO PIVIENT SERMCES
Dear Jeanie:
I am enclosing the following information for your review with respect to the Willowdale Townhome project:
1. One copy of the Sewer and Storm Drainage As -built drawings
2. One copy of the ALTA Survey showing the frontage improvements and location of the water
meters, hydrant, and irrigation meter prepared by Barghausen Consulting Engineers, Inc.
dated March 15, 2013
3. One copy of the Backflow Prevention Assembly Test Report for the irrigation backflow device
prepared by AACRA Backflow Testing and Repair, Inc. dated January 21, 2013
4. One copy of the "Draft" Utility Easement, legal description, and exhibit for the water services,
main, and fire hydrant prepared by Barghausen Consulting Engineers, Inc.
5. One copy of photographs of the trash enclosure installed per the approved construction plans
The above information was prepared based on your October 4, 2012 e-mail to Luke Thornton with our
office. I have also submitted the revised landscape plans based on comments received from Michael
Clugston regarding the fenc ' e height (along the west property line) and our request to remove the trees
along the north, property line. We have also removed the wood fence that was installed along 76th
Avenue West by the previous property owner since it was not review and approved by the Architectural
Design Board.
As indicated per the attached photographs, we have installed the required trash enclosure that will serve
the existing units. The second trash enclosure will be installed when the other units have been
constructed.
18215 72ND AVENUE SOUTH KENT, WA 98032 (425) 251-6110 (425) 251-8782 FAX WWW.NOVASTARDEV.COM
Jeanie McConnell
Engineering Program Manager
City of Edmonds
Public Works Department/Engineering Division -2-
March 18, 2013
Please review/process the enclosed documents and contact me if you have any questions or need
additional information. Thank you.
Respectfully, 601
( "19�6f4L��
'�Z�A
G. Wayne Potter
Vice President
GWP/ps
14950C.001.doc
enc: As Noted
cc: Ricka Gerstmann, Washington Federal
Randy Weber, Novastar Development Inc.
Luke Thornton, Novastar Development, Inc.
Kenneth L. Blondin, Novastar Development Inc.
Sandy Bailey, Novastar Development Inc.
BACKELOW PREVENTION ASSEMBLY TEST REPORT
!r AACRA Backflow Testing and Repair, Inc.
8� (360) 668-1117 Test Procedure: USC 10th Edition
WATERPURVEYOR Edmonds Public Works ACCOUNT#
ASSEMBLY ID/FILE #[UTILITY DEVICE # Meter #
NAME OF PREMISE Willowdale Townhomes Commercial F%* Residential F
SERVICE ADDRESS 20734 76rh Ave. W. Edmonds zip 98026
CONTACT PERSON Jay Graumn PHONE (253) 380-3939
LOCATION OF ASSEMBLY 30'N. Of Fire Hydrant in Planter
-DOWNSTREAM PROCESS Irrigation DCVA W RPBA 0 PVBA El OTHER
NEW INSTALL 0 EXISTING W REPLACEMENT El REMOVED El OLD SER.#
APPROVED ASSEMBLY? YES 91 NO El PROPER INSTALLATION? YES Fv� NO El
MAKE OF ASSEMBLY Febco MODEL 850 SERIAL No. HC39623 sizE .75"
DCVA/RPBA
RPBA
PVBA/SVBA
INITIAL
_DCVA/RPBA
CHECK VALVE NOA
CHECK VALVE NO.2
AIR INLET
TEST
OPENED AT PSID
CLOSED TIGHT W
CLOSED TIGHT W
OPENED AT PSID
PASSED W
#1CHECK PSID
LEAKED El
LEAKED El
DID NOT OPEN E)
FAILED F
2.8 PSID
3.0 PSID
AIR GAP OK?
CLEAN REPLACE PART
CLEAN REPLACE PART
CLEAN REPLACE PART
CHECK VALVE
NEW
0 0 -
0 0 -
0 0
HELD AT PSID
PARTS
El E]
1:1 El
El El
LEAKED El
El El
11 El
El 0
AND
El 11
1:1 1:1
1:1 F1
CLEANED El
REPAIRS
REPAIRED 1:1
TEST AFTER
CLOSED TIGHT El
CLOSED TIGHT El
RV EXERCISED El
AIRINLET PSID
REPAIRS
LEAKED 1:1
LEAKED El
OPENED AT PSID
PASSED f-]
FAILED E)
L_
PSID
I
PSID
#1CHECK PSIDI
I
CHK VALVE PSID
i
AIR GAP INSPECTION: SUPPLY PIPE DIAMETER SEPARATION PASS f-] FAIL
DETECTOR METER READING
LEFT SERVICE AS FOUND Isolation valve: Open W Closed E:] SOV#j Open [-] Closed W SOV#2: Open E] Closed W
REMARKS:
TESTERS SIGNATURE:
-LINE PRESSURE 61 PSI
CERT. No. B5601
CONFINED SPACE? No
DATE 1/21/2013
TESTERS NAME PRINTED Gary L. Brown TESTERS PHONE# (360)668-1117
REPAIRED BY: LIC NO.
FINAL TEST BY: CERT. NO.
DATE
DATE
CALIBRATION DATE 12-06-2012 GAUGE # 03050953 —MODEL Midwest 835 SERVICE RESTORED YES F-1 NO W
I certify that this report -is accurate; and I have used WAC 246-290-490 approved -test methods and test equipment.
Return Address:
City Clerk
City of Edmonds
121 - 5th Ave. N.
Edmonds, WA 98020
Grantor(s): Washington Federal
Grantee: City of Edmonds
Abbreviated Legal: Southeast Quarter
East, W.M.
r*lm
of Section 19, Township 27 North, Range 04
Assessor's Property Tax Parcel No.: 006143-000-010-00
WA-W;P UTILITY EASEMENT
Property Address: N/A
IN CONSIDERATION of benefits to accrue to the grantor(s) herein, the undersigned,
WASHINGTON FEDERAL, hereby grant(s) to the CITY OF EDMONDS, a Municipal Corporation,
a permanent easement for the installation, construction, operation, maintenance, repair,
reconstruction and/or replacement of water meter services, mains, fire hydrants, and necessary
appurtenances, over, across, through, and below the following described property, and the
further right to remove trees, bushes, undergrowth and other obstructions thereon interfering with
the location, construction, operation, maintenance, repair, reconstruction and/or replacement of
said water meter services, mains, fire hydrants, and necessary appurtenances, together with the
right of access to the easement at any time for the stated purposes.
The easement hereby granted is located in the COUNTY OF SNOHOMISH, STATE OF
WASHINGTON, and is more particularly described as the following property:
See Attached Legal Description and Exhibit A
THE CITY agrees to restore to substantially the ' original condition such improvements as
are disturbed during the construction, maintenance, and repair of said utility or utilities, provided
the grantor(s), their heirs, or assigns shall not construct any permanent structure over, upon, or
within the permanent easement.
DATED THIS DAY OF
Ricka Gerstmann
Washington Federal
STATE OF WASHINGTON)
)ss
COUNTY OF
20
On this day personally appeared before me Ricka. Gerstmann, to me known to be the
individual(s) described in and who executed the within' and foregoing instrument and
acknowledged that they signed the same as their free and voluntary act and deed, for the uses
and purposes therein mentioned.
UNDER MY HAND AND OFFICIAL SEAL THIS DAY OF . 20—
NOTARY PUBLIC in and for the
State of Washington, residing at
14950.007.doc
11 -
LEGAL DESCRIPTION
IRRIGATION METER EASEMENT
That portion of Lot 10, Willowdale Gardens Division No. 1, according to the plat thereof recorded in Volume 10 of
Plats, at Page 72, records of Snohomish County, Washington, described as follows:
COMMENCING at the Northeast comer of said Lot 10;
THENCE South 000 42'47" West, 49.70 feet along the East line thereof to the TRUE POINT OF BEGINNING;
THENCE continuing South 00' 42'47"West, 2.00 feet along said line;
THENCE North 89* 17'13"West, 6.00 feet;
THENCE North 00* 42'47" East, 2.00 feet;
THENCE South 89* 17'13" East, 6.00 feet to the TRUE POINT OF BEGINNING.
The above described being within Unit A, Willowdale Townhomes Master Condominium, according to the Survey
Map and Plans recorded under Auditor's File No. 201212195001, records of Snohomish County, Washington.
Project: Willowdale Townhornes
Job No. 14950
March 14, 2013
DJS/kma
14950L.001.doc
14950exhOl.dwg
LEGAL DESCRIPTION
FIRE HYDRANT EASEMENT
That portion of Lot 10, Willowdale Gardens Division No. 1, according to the plat thereof recorded in Volume 10 of
Plats, at Page 72, records of Snohomish County, Washington, described as follows:
COMMENCING at the Northeast comer of said Lot 10;
THENCE South 00' 42'47"West, 78.41feet along the East line thereof to -the TRUE POINT OF BEGINNING;
THENCE continuing South 00* 42'47" West, 5.00 feet along said line;
THENCE North 89* 17' 13" West, 5.00 feet;
THENCE North 00* 42'47" East, 5.00 feet;
THENCE South 89* 17' 13" East, 5.00 feet to the TRUE POI NT OF BEGINNING.
The above described being within Unit A, Willowdale Townhomes Master Condominium, according to the Survey
Map and Plans recorded under Auditors File No. 201212195001, records of Snohomish County, Washington.
Project Willowdalle Townhomes
Job No. 14950
March 14,2013
DJS/kma
14950L.001.doc
14950exhOl.dwg
LEGAL DESCRIPTION
WATER METER EASEMENT
The North 27.00 feet of the East 5.55 feet of Lot 10, Willowdale Gardens Division No. 1, according to the plat thereof
recorded in Volume 10 of Plats, at Page 72, records of Snohomish County, Washington, and being within Unit A,
Willowdale Townhomes Master Condominium, according to the Survey Map and Plans recorded under Auditor's File
No. 201212195001, records of Snohomish County, Washington.
Project: Willowdale Townhomes
Job No. 14950
March 14, 2013
DJS/kma
14950L.001.doc
14950exhOl.dwg
EXHIBIT A
b
10 OVOA\U�A
5.55'
S89'17'1
UNIT A 6
SOO'42'47V
S89'17'13
0.uv
rl\
An Q
S89* 17'11 3"E
N 5.00'
'4 1.) rooc-
socr42'47"W,
5.00'
S89*17'13"E
5.00'
CE
Flle:P:\l 4DOOs\1 4950\survey\l 4950exhOl —water.dwg
SCALE:
HORIZONTAL 1"=20' VER77CAL N/A
�GHA& 18215 72ND AVENUE SOUTH
KENT, WA 98032
g25)251-6222
425)251-8782 FAX
PLANNING, SURVEYING,
CIVIL ENGINEERING, LAND
ENVIRONMENTAL SERVICES
For:
S89-14'48"E
—30.00,
,,—WATER METER 19=201
EASEMENT
IRRIGATION
METER
�,—EASEMENT
%"2.00'
w
co
D
z
w
04
>
uj
C:;
FIRE
0? HYDRANT
z
--EASEMENT
(0
30'
FOUND 2" BRASS
DISK W1 Y
208TH
STREET SW
N89'11 2'42"W
30.00'
3/14/2013 8:04 AM KIM ANDERSON
WILLOWDALE
TOWNHOMES
WATERLINE
EASEMENTS
JOB NUMBER,
14950
14950L.001.doe
SHEET
1 0fj
..........
............
Ln
CM
to�
m
m
WH hl:80 EI/EO/EI02
I MlYd
on
r--7
AM
m
m
Return Address:
City Clerk
City of Edmonds
121 - Sth Ave. N.
Edmonds, WA 98020
CONFORMED COPY
201305020196 5 PGS
05/0212013 9:58am 76.00
SNOHOMISH COUNTY, NSHINGTON
Grantor(s): Washington Federal
Grantee: City of Edmonds
Abbreviated Legal: Southeast Quarter of Section 19, Township 27 North, Range 04 East,
W.M.
Assessor's Property, Tax Parcel No.: 006143-000-010-00
WATER UTILITY EASEMENT
Property Address: N/A
IN CONSIDERATION of benefits to accrue to the grantor(s) herein, the undersigned,
WASHINGTON FEDERAL, hereby grant(s) to the CITY OF EDMONDS, a Municipal Corporation,
a permanent easement for the installation, construction, operation, maintenance, repair,
reconst ' ruction and/or replacement of water meter services, mains, fire hydrants, and necessary
appurtenances, over, across, through, and below the following described property, and the further
right to remove trees, bushes, undergrowth and other obstructions thereon interfering with the
location, construction, operation, maintenance, repair, reconstruction and/or replacement of said
water meter services, mains, fire hydrants, and necessary appurtenances,. together with the right
of access to the easement at any time for the stated purposes.
The easement hereby granted is located in the COUNTY OF SNOHOMISH, STATE OF
WASHINGTON, and is more particularly described as the following property:
See Attached Legal Description and ExhibitA
THE CITY agrees to restore to substantially the original condition such improvements as
are -disturbed during the construction, maintenance, and repair of said utility or utilities, provided
the grantor(s), their heirs, or assigns shall not construct any permanent structure over, upon, or
within the permanent easement. ::!�A—
DATED THIS DAY OF V- t 201-3
Kicka Gerstmann
Washington Federal
STATE OF WASHINGTON)
)ss
COUNTY OF VU't)q
On this day personally appeared before me Ricka Gerstmann, to me known to be the
individual(s) described in and who executed the within and foregoing . instrument and
-acknowledged- that they -signed the same -as their -free and - vol u ntary-act-and -deed - for -the -uses --
and purposes therein mentioned.
UNDER MY HAND AND OFFICIAL SEAL THIS I �tDAY OF 20 13
Notary Public
State of Washington
JOY N. PARDUE
MY COMMISSION EXPIRES
September 23, 2014
Nqt/ARY/PUbLIC in a2i;r' 1C
StWe of Washington, residing at
6e_0-4��, VA
14950 007.doe
LEGAL DESCRIPTION
IRRIGATION METER EASEMENT
That portion of Lot 10, Willowdate Gardens Division No. 1, accordhng to the plat thereof recorded in Volume 10 of
Plats, at Page 72, records of Snohomish County, Washington, described as follows:
COMMENCING at the Northeast comer of said Lot 10;
THENCE South 00* 42'47"West, 49-70 feet along the East'line thereof to the TRUE POINT OF BEGINNING;
THENCE continuing South 00" 42'47West, 2.00 feet along said line,
THENCE North 89* 1 -P 13"West 6.00 feet;
THENCE North 00' 42'47" East, 2.00 feet;
THENCE South 89' 17' 13" East 6.00 feet to the TRUE POI NT OF BEGINNING.
The above described being vk(Win Unit A, Willowdale Townhomes Master Condominium, according to the Survey
Map and Plans recorded under Auditor's File No. 201212195001, records of Snohorrtish County, Washington.
Project: WMowdale Townhomes
Job No. 14950
March 14,2013
DJS/kma
149501-001.doc
14950exhOl -dwq
LEGAL DESCRIPTION
FIRE HYDRANT EASEMENT
That portion of Lot 10, Willowdale Gardens Division No. 1, according to the plat thereof recorded in Volume 10 of
Plats, at Page 72, records of Snohomish County, Washington, described as follows:
COMMENCING at the Northeast comer of said Lot 10;
THENCE South 00* 4Z 47"West, 78.41 feet along the East line thereof to the TRUE POINT OF BEGINNING,
THENCE continuing South 00* 42'47" West 5.00 feet along said line;
THENCE North 89* 17' 13" West, 5.00 feet
THENCE North 00* 42'47" East 5.00 feet;
THENCE South 89' 17' 13" East, 5.00 feet to the TRUE POINT OF BEGINNING.
The above described being within Unit A, Willawdale Townhornes Master Condominium, according to the Survey
Map and Plans recorded under Auditors File No. 201212195001, records of Snohomish County, Washington.
Project Willowdale Townhornes
Job No. 149W
March 14,2013
DJSAMM
14950L001.doc
14950exhOl.dwg
LEGAL DESCRIPTION
WATER METER EASEMENT
The North 27.GO feet of the East 5.55 feet of Lot 10, Willowdale Gardens Division No. 1, according to the plat thereof
recorded in Volume 10 of Plats, at Page 72, records of Snohomish County, Washfngton, and being mfithin Unit A,
Willowdale Townhomes Master Condominium, according to the Survey Map and Plans recorded under Auditors File
No. 201212195001, records of Snohomish County, Washington.
Project Willowdale Townhornes
Job No. 14950
March 14. 2013
DJS/kma
14950L.001.doe
14950exhOl.dwg
EXHIBIT A
b
C1
IM005
-Wp \0
0\'N'Dp�
C'0
�AO
g�A
SW 17'1 30E
UNIT A 6.00'
SW42'4-rW---
S89'17*1
L) An S89* 17'1 3"E
I L� Ar-1 %%j o0s
5.
SW42'47-W--�
S8T 17'11 YE
CE
Flu:p-\l 4000s\1 4950\sutvey\l 4950exhO I —mter.d wg
Sc4Lz-
HOWONTAL 10=20� VER77CAL N/A
18215 72ND AVENUE SOUTH
KENT� WA 980 32
(425)251-6222
(425)251-8782 FAX
CML ENGINEERING, LAND
PLANNING, SURVEYING,
EPMRONMENTAL SERVICES
S89'11 4'48"E
3O.Ow
,,—WATER METER
EASEMENT
IRRIGATION
METER
I —EASEMENT
2.00'
w
z
co
LLI
C4
FIRE
23
HYDRANT
,,—EASEMENT
,--5.00,
i4
C;
m
3Cr
FOUND 2' BRASS
DISK W/ Y
208TH
STREET SW
N8T12'420W
30.00'
5/14/2013 8:G4 AM
KDA
AKDERSON
For:
WILLOWDALE
TOWNHOMES
Title:
WATERLINE
EASEMENTS
JOB NUMBER
14 95) 0
14950L.001.doc
SHEEr
I - ' 1
J57sa �
(4350)
3000
10. 5 61 '�� uIr
CITY COPY
FULL DRAINAGE REPORT
WILLONMALE TOWNHOMES
CITY OF EDMONDS, WA
Preparedfor:
Murphy Building Company
6203 202' Street SW
Lynnwood, WA 98036
Phone (425)-775-3388
Attention: Bob Murphy
JEXPIRES 9/17/08 1
Prepared by:
IREe r A//
IF I ke
FLURY-WYRICK & ASSOCIATES, INC.
3409 McDougaff Avenue, Suite 102
Everett, WA 98201
425-259-0964
V
e-
ENGINEERING '
Prepare& R�Eicc-IVED
May 1, 2008
2008
0EpAATMENj'
CITY OF ED'Mo�6.S
SECTION 1 - PROJECT OVERVIEW
TABLE OF CONTENTS
SECTION1 - PROJECT OVERVIEW ... . ................................................. . .. . ................................. . ... .......................... 3
EXISTINGSITECONDITIONS, ....................................................................................................................................... 3
PROPOSEDSITE CONDITIONS ..................................................................................................................................... 3
SECTION 2 - CONDITIONS AND REQUIREMENTS SUMMARY ................ . ... ................ . ...................................... 5
SECTION3 - OFFSITE ANALYSIS ...... . . ......... . . ........ . ............... . ................................. . .. . ........................... ...... . ..... 6
UPSTREAMANALYSIS .................................................................................................................................................. 6
DOWNSTREAMANALYSIS ........................................................................................................................................... 6
SECTION 4 - FLOW CONTROL AND WATER QUALITY FACILITY ANALYSIS AND DESIGN ........... ............ 16
SITEHYDROLOGY (PARTS A & B) .............................................................................................................................. 16
PARTA - EXISTING SITE HYDROLOGY ................................................................................................................ 16
PARTB - DEVELOPED SITE HYDROLOGY ........................................................................................................... 16
WATERQUALITY.................................................................................................................................................... 19
SECTION5 — TESC ANALYSIS AND DESIGN ............................................................ . ............................................... 23
SECTION 6 — MAINTENANCE AND OPERATIONS K&NUAL ......... . ........... . .............................................. .......... 24
APPENDIX A — CONVEYANCE CALCULATIONS .............................................. . .... . ............................................... 30
TABLE OF FIGURES
FIGUREI — VICINITY MAP ............................................................................................................................................ 4
FIGURE2 — SITE PHOTO #1 ......................................... . .............. . . ................. . ....................................................... ... 7
FIGURE3 — SITE PHOTO #2 ........................................ . .............................. . ........................................................... ..... 8
FIGURE4 — SITE PHOTO #3 ............................. . ............. . ....... . ...... . ... . . . . ... . . . . ......... . .......................................... 9
FIGURE5 — SITE PHOTO #4 ........................................................................... . ..................................... . .................. .. 10
FIGURE6 — SITE PHOTO #5 ....... . ................ ................ . ............................. . . . . .............. . .................................. . ... 11
FIGURE7 — DOWNSTREAM BASIN MAP ................................................ . .............................................. . ... ............. 12
FIGURE8 —BASIN MAP . .... . . . ... . ...... . ............. . .................... . .................. . . . . . . ....... . ......... . ...................... . ...... . 13
FIGURE9 — EXISTING CONDITIONS ........ . ............ . ..................................... . . . . ................... . ............... . ............. . 14
FIGURE10 — SOILS MAP . . . ............................... . ....... . ................................................................................ . .............. 15
FIGURE11 — DEVELOPED CONDITIONS ................................................................................................................... 22
Full Drainage Report Page 2
Willowdale Townhomes May 2008
SECTION I - PROJECT OVERVIEW
SECTION I - PROJECT OVERVIEW
EXISTING SITE CONDITIONS
The project site is developed with an unoccupied professional building and associated parking. The
perimeter of the site is ringed with ornamental trees and landscaping. The site slopes to the onsite storm
drainage conveyance system which drains to the east to 76h Avenue W. The project lies to the west of the
intersection of 76* Avenue W and 208'h Street SW. The site address is 20628 76h Avenue W. The
intersection of 76th Avenue and 208'h Street SW is signalized with the existing commercial driveway
(south entrance) to the site forming the west leg of the intersection. The site frontage on 766 Avenue W
is currently improved with an approximately 22' wide travel lane, curb, gutter and sidewalk. The
northernmost entrance to the site will be removed with the development of the site.
The site is located at a high point on 7e Avenue. The topography trends to the south and east toward
Hall Creek which lies east of SR99.
The on -site soils are Alderwood Urban Land Complex.
PROPOSED SITE CONDITIONS
The site will be developed for the construction of attached multi-fan-dly housing. Four separate buildings
are proposed with a common drive aisle and a hammerhead turnaround. Sanitary sewer and potable water
will be extended into the site from City of Lynnwood facilities located in 70h Avenue W. Stormwater
detention will be provided by two hydraulically connected stormwater detention vaults design in
accordance with Edmonds Municipal Code requirements and guidelines found in the 1992 Department of
Ecology Stormwater Management Manual for the Puget Sound.Basin.
The project qualifies as redevelopment as defined by the Edmonds Municipal Code. EMC 18.03.060A
states that "any new development or redevelopment with more than 2,000 square feet of new impervious
surfacing shall be required to provide storm water quality controls." Permanent water quality measures
for stormwater runoff from pollution -generating impervious surfaces will be incorporated into the site
design with the provision of two Stormfilter filtration systems provided by Contech Stormwater Solutions
Inc.
EMC 18.30.060(l)(a) states that "all development sites less than one acre that discharge directly or
indirectly to a stream shall be required to limit the peak rate of runoff to the predeveloped condition two-
year, 24-hour design storm, while maintaining the predevelopment condition peak runoff rate for the 10-
year, 24-hour and 100-year, 24-hour storms. The proposed stormwater vaults have been designed to
meet this standard. EMC 18.30.060(l) defines the predevelopment site conditions: the predevelopment
condition for all cases other than open water bodies shall be considered meadows or young second growth
forest. Second growth forest was utilized for this site. A summary of the Nfmimurn Requirements can be
found in Section 2 of this report.
FuU Drainage Report Page 3
Wfflowdale Townhomes May 2008
SECTION 1 - PROJECT OVERVIEW
FIGURE 1 — VIMM MAP
FAB
IL
Ml
NUNN Nil
MIN=
m
Zl;e 1-H ST SW
VICINITY MAP
SCALE- 1"=1000'
Full Drainage Report Page 4
Wiflowdale Townhomes May 2008
SECTION 2 - CONDITIONS & REQUIREMENTS
SECTTON 2 - CONDMONS AND REQUIREMENTS SUMMARY
STORMWATER DETENTION: Two hydraulically connected underground detention vaults will
mitigate for increased in stormwater runoff. These facilities will limit the developed flow rates to
50% of the predeveloped 2-year flow rate and will match the 10- and 100-year predeveloped, flow
rates.
PRESERVATION OF NATURAL DRAINAGE SYSTEMS: The proposed point of discharge is
to the existing conveyance system located in 7e Avenue W. The site currently drains to this
system.
SOURCE CONTROL OF POLLUTION: Permanent water quality measures have been
incorporated into the site design. Volume 4 Page 1-6 of the Ecology Manual states that source
control BMP's are not required for parking lots with less than 20 stalls. Residents of the proposed
development will park in garages.
IV. RUNOFF TREATMENT BMPS: Permanent water quality measures for stormwater runoff from
ed in th the
pollution -generating impervious surfaces will be incorporat to the site design wi
provision of two Stormfilter filtration systems provided by Contech Stormwater Solutions Inc.
V. WETLANDS: There are no critical areas on or adjacent to the site.
VI. WATER QUALITY SENSITIVE AREAS: Staff did not indicate at the preapplication meeting
for the project that the site lies -within a water quality sensitive area.
vu. OFFSITE ANALYSIS AND MITIGATION: An offsite analysis is included in Section 3 of the
report.
Vffl. BASIN PLANNING: The applicant is not proposing to develop or utilize a specific basin plan.
VC OPERATIONAND MAINTENANCE: An Operations and Maintenance Manual is provided in
Section 6 of this report
X. FINANCIAL LIABILITY: Maintenance or performance bonds will be submitted prior to permit
issuance.
FuU Drainage Report Page 5
Wfflowdale Townhomes May 2008
SECTION 3 - OFFSITE ANALYSIS
SECTION 3 - OFTSITE ANALYSIS
UPSTREAM ANALYSIS
The site sits on a high point relative to adjacent properties. Single family residential homes to the west are
lower in elevation. The site is bordered to the north and south by apartment complexes that slope toward
the existing conveyance system located in 76th Avenue W. Given the site conditions and surrounding
topography upstream flows are nonexistent or negligible.
DOV#74STREAM ANALYSIS
Stormwater runoff from the site flows to the east to 76h Avenue W to the existing storm drainage
conveyance system located in the right of way. The site is currently developed and the onsite storm
drainage system consists of a series of catch basins and storm drainage pipes that convey runoff along the
south side of the site to a storm drain manhole located east of the centerline of 760, Avenue W. At the
time of the field survey of the site the storm drain manhole was full of water and the outgoing pipe invert
was not identifiable. The area slopes down to the west along 208'h Street SW, so it assumed that the
conveyance system located in 208'h Street SW is the downstream drainage course for the project. 208'h
Street SW has a piped conveyance system that drains to the west toward Hall Creek to a point that is
greater than 1/4 mile downstream from the proposed point of discharge. There were no apparent signs of
scouring, flooding or sediment buildup in the downstream system. Given the level of detention proposed
and the assumption of a forested predevelopment land cover the downstream system should be adequate
to continue to receive runoff from the site.
FuU Drainage Report Page 6
Willowdale Townhomes May 2008
ow
an
0,
.........
. . . . . . . . . . .
.
74-02�
N
SECTION 3 - OFFSITE ANALYSIS
I FIGURE 8 —BASIN MAP
Full Drainage Report Page 13
Wiflowdale Townhomes May 2008
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EXISTING CONDITIONS
G)
WILLOWDALE TOWNHOMES
0i
MURPHY BUILDING COMPANY
go
EDMONDS, WASHINGTON
I
SECTION 3 - OFFSITE ANALYSIS
FIGURE 10 — SOELS MAP
5 — Alderwood Urban Land Complex, 2-8 percent slopes
Source: NRCS — National Resources Conservation Service
I
Full Drainage Report Page 15
Willowdale Townhomes May 2008
SECTION 4 - FLOW CONTROL AND WATER QUALITY DESIGN
SECTION 4 - FLOW CONTROL AND WATER QUALITY FACILITY ANALYSIS AND DESIGN
SITE HYDROLOGY (PARTS A & B)
PART A - EXISTING SITE HYDROLOGY
Ile existing site is developed. Ile predeveloped land cover was modeled using 2nd growth forested and hydrologic
soil group C.
PART B - DEVELOPED SITE HYDROLOGY
'Me new proposed drainage system will collect surface runoff m a series of h '>a0sr0ffiid\carry water via
underground pipes to the onsite detention and water quality facility. The s:area i 0.95 res and the total of
proposed impervious surfacing is 0.75 acres, with the balance of the site in the devel p ndition devoted to
landscaping areas.
Precipitation Depths
6 mo = 1.01"
2 yr = 1.50"
10 yr = 2.40"
100 yr = 3.50"
Existing Event Summary:
Basinll) Peak Q Peak T Peak Vol Area Method Raintype Event
(Cfs) (hrs) (ac-ft) ac /Loss
Existi� 0.02 17.00 0.0249 0.95 SBUWSCS TYPEIA 2 yr
Existi� 0.06 10.00 0.0690 0.95 SBUMSCS TYPEIA 10 yr
Exist* 0.13 9.17 0.1352 0.95 -SBUIUSCS TWEIA 100 yr
Drainage Area: Existing
Hyd Method: SBUH Hyd Loss Method: SCS CN Number
Peak Factor: 484.00 SCS Abs: 0.20
Storm Dur: 24.00 hrs Intv-. 10.00 min
Am CN TC
Pervious 0.9500 ac 81.00 2.19 hrs
Impervious 0.0000 ac 0.00 0.00 hrs
Total 0.9500 ac
Supportift Data:
Pervious CN Data:
2nd Growth Forested 81.00 0.9500 ac
Pervious TC Data:
Flow qrpe: Description: Length: Slope: coeff: Travel Time
Sheet None Entered 300.00 ft 0.50% 0.4000 131.51 min
Full Drainage Report Page 16
Willowdale Townhomes May 2008
SECTION 4 - FLOW CONTROL AND WATER QUALITY DESIGN
Developed Event Summary:
BasinID Peak Q
Peak T
Peak Vol Area Method
Raintype Event
(cfs)
(hrs)
(ac-ft) ac
/Loss
Deeloped 0.26
8.00
0.0882 0.95
SWIMS
TYPEIA 2 yr
Developed 0.45
8.00
0.1551 0.95
SBLJWSCS
TYPEIA 10 yr
Developed 0.70
8.00
0.2391 0.95
SBUWSCS
T"ElA 100 yr
Drainage Area: Developed
Hyd Method: SBUH Hyd
Loss Method:
SCS CN Number
Peak Factor: 484.00
SCS Abs:
0.20
Storm Dur: 24.00 hrs
Intv:
10.00 min
Area
CN
TC
Pervious 0.2000 ac
86.00
0.08 hrs
Impervious 0.7500 ac
98.00
0.08 hrs
Total 0.9500 ac
Supporting Data:
Pervious CN Data:
Pervious
86.00
0.2000 ac
Impervious CN Data:
Impervious
98.00
0.7500 ac
Pervious TC Data:
Flow type: Description:
Length:
Slope: Coeff.
Travel Time
Fixed None Entered
0.00 ft
0.000/0 5.0000
5.00 min
Impervious TC Data:
Flow type: Description:
Length:
Slope: Coeff.
Travel Time
Fixed None Entered
0.00 ft
0.00% 5.0000
5.00 min
Control Structure ED: D-001 - Multiple Orifice Structure
Descrip:
Multiple Orifice
Start El
Max El
Increment
432.6000 ft
438.0000 ft
0.10
Orif Coeff
0.62
Bottom El-.
430.60 ft
Lowest Diam:
0.4102 in
out to 2nd:
3.5900 ft
Diam:
1.4063 in
2nd to 3rd:
0.8000 ft
Diam:
1.5234 in
Node ED: Vault
Desc:
Manhole structure
Start EI:
432.6000 ft
Max El:
438.0000 ft
Contrib Basin:
Contrib Hyd:
Stage
Area
Volume Volume
432.60
935.00
0.00 d 0.0000 adt
438.00
935.00
5049.00 cf 0. 1159 acft
Full Drainage Report
Willowdale Townhomes
,5"t S+-
Page 17
May 2008
FLOW CONTROL AND WATER QUALITY DESIGN
SECTION 4
Hydrograph 11D: out2
Area: 0.9500 ac Hyd Int: 10.00 min Base Flow:
Peak Flow: 0.0086 ds Peak Time: 24.17 hrs Hyd Vol: 0.0 113 acft
Hydrograph ED: out10
Area: 0.9500 ac Hyd Int: 10.00 min Base Flow:
Peak Flow: 0.0575 ds Peak Time: 18.17 hrs Hyd Vol: 0.0780 acft
Hydrograph ED: out][00
Area: 0.9500 ac Hyd Int: 10.00 min Base Flow:
Peak Flow: 0. 1296 ds Peak Time: 11.67 hrs Hyd Vol: 0. 1611 acft
RLPCOM[PUTE [RLP] SUMMARY cti
- Peak Stg: 436.19 ft - A ve Vol: 3352.38 cf
yr Match Q: 0.0091 cfs Peak Out Q: 0.0086 cfs
Oyr Match Q: 0.0569 cfs Peak Out Q: 0.0575 cfs - Peak Stg: 436." ft - Active Vol: 4102.30 cf
100 yr Match Q: 0.1288 cfs Peak Out Q: 0.1296 cfs - Peak Stg: 437.70 ft - Active Vol: 0.1096 acft
The site is 80% impervious, therefore a factor of safety of 40% was applied to the required volume.
The modeled vault area under "Node ED: Vault" is 935 sE
935 sf * 1.4 = 1,309 sE
The total area provided in the vaults is 1,310 sf
Full Drainage Report Page 18
Willowdale Townhomes May 2008
I
SECTION 4 - FLOW CONTROL AND WATER QUALITY DESIGN
WATER QUALITY
Stormfilter catch basins from Contech Stormwater Solutions will provide water quality for pollution generating
impervious surfaces. Runoff from rooftops will bypass the water quality devices and drain directly to the
conveyance system or detention vaults.
CB 4 Event Summary:
BasinID, Peak Q
(cfs)
CB 4 0.04
Drainage Area: CB 4
Hyd Method: SBUH Hyd
Peak Factor: 484.00
Storm Dur: 24.00 hrs
Area
Impervious 0. 1800 ac
Total 0. 1800 ac
Supporting Data:
Impervious CN Data:
None Entered
Impervious TC Data:
Flow type: Description:
Fixed None Entered
CB 5 Event Summary:
BasinlD Peak Q
(cfs)
CB 5 0.01
Drainage Area: CB 5
Hyd Method: SBUH Hyd
Peak Factor: 484.00
Storm Dur 24.00 hrs
Area
Impervious 0.0400 ac
Total 0.0400 ac
Supporting Data:
Impervious CN Data.
None Entered
Impervious TC Data:
Flow type: Description:
Find None Entered
Full Drainage Report
Willowdale Townhomes
Peak T
(hrs)
8.00
CN
98.00
98.00
Peak T
(hrs)
8.00
CN
98.00
98.00
Peak Vol Area Method Raint3rpe Event
(ac-ft) ac /LOSS
0.0120 0.18 SBUWSCS TYPEIA 6M0
Loss Method: SCS CN Number
SCS Abs: 0.20
Intv: 10.00 min
TC
0.08 hrs
0. 1800 ac
Length: Slope:
0.00 ft 0.00%
Peak Vol Area
(ac-ft) ac
0.0027 0.04
Coeff. Travel Time
5.0000 5.00 min
Method Rainqrpe Event
/Loss
SBUIUSCS TYTEIA 6mo
Loss Method: SCS CN Number
SCS Abs: 0.20
Intv: 10.00 min
TC
0.08 hrs
0.0400 ac
Length: Slope: Coeff. Travel Time
0.00 ft 0.00% 5.0000 5.00 min
Page 19
May 2008
A�
SECTION 4 - FLOW CONTROL AND WATER QUALITY DESIGN
Size and Cost Estimate
PrepafW by Ka" Timmusm cm ApW 16, 2M
Willowdale ToWnhomes — Stormwater TreabMnt SySteat
Edmonds. WA
Informatm pnwided:
Structure ID = CB 4 C5 5
Total Area (acre) 0.18 0.04
Percent Impervious 100 100
Water Ckality Flow, WOF (cls) 0.04 0.1111
Peak Flow, 0100 (cfs) 0-14 0.03
Assumpfions:
* Media = ZPG cartridges
0 Per Cartridge flow rate = IS gpm
0 Drop requirW ftm RIM to outlet 2-3'minimum
4P Presiding agency = City of EdnxwWs
Size and cost estimates:
The StomiFffter is a flowbased system and ftierefure, is azed by calculs1ing the water quality flow rate associated
wiffi the design storm The water quality flow Fula was calculated by the design engineer
using the SBUH nwffwd
and pruvided to CONTECH Slormainfer Solutions.
Water
Structure Approximate NO. of
Quality system size
Estimated
ID Depth Cartridges
flow
cost
CB 4 0.04 2.3? 2 Catchbasin
$9,700
CB 5 0.01 2-T 1 Catchbasin
$5,500
The estimated costs are for complete system delivered tD thejob site. The contractor is responsible for setting the
Stwml'ifter system and all external plumbing.
02006 CCNIECH SbMfW2tW SOILUMS
aNdE&Shyffmater.com
I M21-0 NE A&W Way. PWAMd CR VMIJ
TOO-fteE80DAUAGR FaXSMMI.1271
PW10f1
TS-PW
Full Drainage Report Page 20
Wiflowdale Townhornes May 2008
SECTION 4 - FLOW CONTROL AND WATER QUALITY DESIGN
WATER OUALITY BASIN AREAS
FuH Drainagc Rcport Pagc 21
Willowdale Townhomes May 2008
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6203 2021d STREET SW
4256775-33W AR
& ASSOCIATES. INC.
-------------
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cl
STORMFRL
pt
't AVE
--------------
OF WATER)
STORM DRAINAGE CONSTRUCTION NOTES -ROAD CONSTRUCTION NOTES
(D REMOVE EXISTING ir sToRN PrE FROM ExsTwc TYPE 2 CATCH aASmL STRUCTURE WAS FLU OF
WATER AT RME OF TOPOOWNIC SURVEY. CONNECT NEW 12' STOW PIPE TO STRUCTJRE. SEE REPLACE ERESTING ORIVCWAY ON MEW CIJREl. GUTTER AND SIDEWALK SAWCUT EXIST 0I GUTTER AND
PROFILE FOR VERTICAJ. lWaNATION. VERIFY 02STING MWERT. SIDEWALK AND PAVEMENT MORNING AT STA 10+76 It LT AND COW AT STA 11 +25 It LT. REIIOVE
EXISTING PAVEL04T SECTION. CUM. GUTTER AND SOEWALK BETWEEN RIGHT OF My AND SAWOUT Uw-%
Emsmc ir STORM PIPE TO BE REMOVED AND REPLACED WN NEW 12' STORM PIPE. "STALL NEW CURB. GUTTER AND SIDEWALK PER STANDARDS AND SPECIFICATION OF THE CITY OF EDUCHOS
ADJUST MY UTILITY SO)IM COVERS AND OR LIDS W SDE%A,, To NEW M94 GRADE. MATCH EXIST SIDEW"
AMD
EXISTING CATCH BASIN TO BE REMOVED AND REPLACED WIN NEW TYPE I CATCH BASIC RECOMECT SPE PAVEMENT AT UNITS OF NEW WORK PAVEMENT SECTION SHALL BE REPLACED PER THE STANDARDS
STORM PIPE N FROM NORTH TO NEW STRUCTURE. CIFICATIONS OF THE CITY OF EDMONDS. SEE STANDARD DETAILS ON 94V C9.
CATCH BASINS 4 ANE11 5 ARE STORWITILTER STRUCTURES By CONTECH ST ORM-TER SOLUTIONS SEE REPLACE EASING DRIVEWAY WIN WEV WULTI-FAWLY ENTRANCE. SAWCUT ENSONG CURB. GUTTER AND
SHUT CII FOR DETAILS OF THESE STRUCTURE& SIDEWALK AND PAVEMENT BEGINNING At STA 9+46 It LT AND ENDING AT STA 10+24 19 LT. REMOVE
E)QSnNC PAVEMENT SECTION. CURIL GUTTER AND SIDEWALK BETWEEN RiCH7 OF WAY AND SAWCUT UNE&
CONSTRUCT NJEW CONTROI. STRUCTURE. SEE DETAIL ON 94EET L BODIES. COVERS AND OR LOS N SIDERALK ED NEW FINISH GRADE ADA)S7 CATCH BASIN GRATES OR SOLID
CONSTRUCT MANTON VAULT AT Two LOI SEE qItET C,2 FOR GENERAL wowAum SEE COVERS ED NEW FINISH GRADE IN PAVEM04T AREAS. MATCH COST SIDEWALK AND PAVEMENT AT LIMITS OF NEW
STRUCTURE DRAWINGS FOR AUL CONSTRUCTION DETAILS AND INFOMANON. 16 EIUXLDWIG SETBACK TO WORIL PAVEMENT SECTION SMALL BE REPLACED PER NIE STANDARDS AND !PEaFr�noms OF THE aTy OF
VAULT IS REQUIRED. EIWONDS SEE STANDARD DETAILS 04 SHEET C9.
WSTM1 YAW OPARN W LOW POINT OF CIUMN41 CONNECT YARD GRAIN TO DOM SPOUT DRAW cAm GUTTER AND SRI EREEAI sTA 10+24 AND STA 10+76 TO RE—+ GJL
SYSTEM. SA T EXISTING PAVEMENT TO PROYDE FOR NEW umury OONSTRuCTIEN. LOCATION OF THE SAWCUT W GRA— GJL
NSTALL 6- PCY PIPE TO WITHIN S' OF THE BUILDING FOUNDATION FOR FOCITING AND ROOF ORARN ON mE PLAN is ApmonwrE ONLY. THE CONTRACTION SUU. PLACE THE SAWour ocRRoN TO PNoVoE THE
CONWICTION TO STOW DRAW SYSTEM. NECESSARY WON TO PERFORM THE MrY CONS-CnOK PIVEIAENT SECTION SKAUL BE REPLACED PER THE
ST CARDS AND SPECIFICATIONS OF tK ary OF EDMOND& SEE STANDARD OETAA-S ON SHEET C9. RIVIF
Ensn.G CATCH BASIN ED BE REPLACED.
NEW AC PAVEMENT SEE FfINCA. ORIWWAY SECTIONS OH 94JET Co.
WSTAU. NEW CURB AT LOCARCM SHOW, ON THE PLAIN. SEE OUREI DETAIL ON 94EET C9.
CONSTRUCT NEW CONCRETE SIDEWALK AND GARAGE ACCESS AS SHOWN ON THE PLAN SEE SHEET Cs FOR 1�-20'
SIDEWALK SECTION. `RCUEa NUMSER,
CONSTRUCT CONCRETE mASm 0,,CLORPE PAD. SEE ARCHITECTS PLAN FOR OETALS. m8CGool
CALL FOR
� NUMBER
UTILITY LOCATES
'nVO BUSINESS DAYS
BEFORE APPROVED FOR COINSMUCTION
YOU DIG FIG 11
1-800424-5555
SECTION 5 - TESC SUMMARY
SECTION 5 — TESC ANALYSIS AND DESIGN
Erosion control measures will include silt fences, catch basin inlet protection and ground cover practices. Silt fences
will be placed at the dovmstream edges of all disturbed areas. The plans include details and notes for the use and
maintenance of catch basin protection and ground cover practices. The wet vaults are to be utilized as sediment
ponds during construction. The vaults shall be cleaned and all sediment removed once the site has been stabilized.
Full Drainage Report Page 23
Willowdale Townhomes May 2008
SECTION 6 - MAINTENANCE AND OPERATIONS MANUAL
SECTION 6 — MAINTENANCE AND OPERATIONS MANUAL
No. 3 — Ckeed Delardion Syslacm frwdmNaults)
Ddwt
ConAlans Whm Kwderence Is fteded
assweenabd
whell— nce Is
POW
Sbrage Am
Pkqged Air VWft
Ons-half of the am eactbn cf a vat Is
Vants"Wand
Mirk aind Sedirneft
Mama" sediment depth wwwds 110%
of do diameter of the durags aree for 102
bm%p of storage vault or my point deo
All sedirnent aid
ddxW rermned fmm
I-M Rgi am.
exomeds ISK of dander.
(Exarnple: 724nch slorage, in& muki
reqft cleaning utm sediment readhae
d 7 inches for more then 19 langth of
Joints Between
Tenkfi`lpe Section
An arvaidealowArgmalarblia
be! ft bcay,
(Will RKIL" eMkwwkg ansl�sle to
=buhvew
a wdbne
am Owed
determine shx*xW stabilly).
Beet OtA
Tre-pplr
=ypartcfjt(w*Jp lebardoutof
b design GhWe!�=
. efo
Im W
required by engineer b clahm., ine sttx*sW
stabiw.
ToWpkw = or
rephund bD grL
VIOLA alrucalre
InckWas Cracks in
walL Boftm.
Damage b Ran
andtar Top Slab
Cracks wider than 124fich and
evidenosof sall particles :::4wL
structure through the cracics, or
al
=,,.Tkr&'uctwV*
smNli
V=m* rt.)Cde d
specificadwe am Is
*udmft WNW.
CrackswkierthwV24%chattheointaferty
inletfoLAW pkw or mW evidenas of soll
entering the vault ftaugh fie wells.
No cracice rnars then
14-inch Wde at the
Ph of the WdAouft
pipe.
marowle
Cover Not in Place
Cow Is migaing or OT4 W* irl plaw.
Any open nw*xAe reqt*ee ntairtlenwes.
M#AO lacbsed.
Locldng Meduwdern
Nctftrking
Medmilem carvwt be opened by am
maintenance person with pwparbxils, Bob
Inb forne ham bee #un W Inch of thrad
Meclumlamtopers
whh poW OIL
(may not aR* to aW4xkbq llda�
Cover DifficLitto
Remove
Onernsintananceperem — r rarroveld
slar spoft narreal H" pressure. Interd
=kf=cmw ftm sealing off somess b
Cover cm be
removed and
==byaw
PWWM
Ladder Rungs Uneals
Is uneds due b n4saing rungs,
Ladder meats design
mledgrmut rot seanvly attached tD
abucbire, wtA nat or rx mol a
standancle. Alm
mairdenanoe person
I ads wasm.
F,b,h Bash,
jSae-Cawh&.W
(No. EP)
ISee-CdchB.*W0,b.0.
See*CWxh Bs*W
I (N& b). 1
+34 Vabon V — Ruftff Tmtawf aws ALlwsf2Wl
FuU Drainage Report Page 24
Willowdale Townhomes May 2008
SECTION 6 - MAINTENANCE AND OPERATIONS MANUAL
No. 4 - Contol Sbuctuaffilm ResWdor
Makdommme
DoW
CONIftnWhMmminforummisliffie, In
RMAPE q.-W
lfbotbalawardlooplalm
General
Tfash wd Debris
MAAwW mma-le 26% of a" dep1h cw I
Car" struck"
(IncludesSedirnant)
orrm Is rot bb&ed
All Vasti and do"
rarnmed
ftuch" Darnew
fwwm is nd sewdy mwhw 6)
"W1*018 Val
ftwturv, seam*
., . towellisind
0" op.
Stniclure Is " In position (sihm up
We" In corred
rW
to 10% firm Amb
Position.
Cannectionstocutlat pipe we not %%~
Conrimllons bo outlet
and show ebm of nmL
=wder thht
repaired or
replaced and
am desWed.
-otw fm designed holea-4n 1he,
ftudure has no
holes ottm 11m
desWed holes.
Clemmut Gate
Darnaged or L111maing
Cleanout 9da Is not weter%M or Is mismingi.
Ode k viatertight
md waft am
deelgr"
Gate cannot be ffaved up and dow by one
nukintanence person.
Gate rnom up and
down so* aW is
watertlift,
Chahkod leaft 6D gas Is fnhmbV or
dernaged.
Chain Is hi plaw mid
worb as deaWned.
"a Is rusted ovw SIM of Its surfew anmL
Ode Is rep*W or
replaced to most
desigin Glandade.
oriflom Plats
Dwnqed or Weeft
Control devios IB not worift do to
Phts Is In place wd
"dwing. outd plaw. or bent =pIds.
wwb as desbned.
Obshxftm
Any bash. deble. eadmm* or veptallon
bbftq the plab.
Pkft Is tw of all
obalructione and
worlm se deskined
overilow Pip
Obstrucilone
Anytmh or debris blocking (or having tw
poterilial of blocking) Ithe overfloar pipe.
Pipelelireedell
obstructions aid
waft as deWgmd
manhole
see 'Closed
Detention SystmW
(No. 3).
8"-CloeW Detention SystwW Ob. 3�
Sw'Ckxmd
Defention Systeres'
(No. 4
Catch Basin
age Tosbch Beew
SeeCatch Bealne (No. 6).
see"Calch Be"
(NO. fi).
, (w. 5).
Auquat2001 VbAme V — Ruwff Tmabmd SWa 4-35
Full Drainage Report Page 25
WiHowdale Townho.mes May 2008
SECTION 6 — MAINTENANCE AND OPERATIONS MANUAL
NO. 5 - catch 61181M
JAI' -I I F,
D~
CoaMons 10111m. Net Is Needed
ReriftENpooteciften
camponant
GefwW
TRIGh a
Trashordelm whid b located
No Trash or debris I, =ta
Debris
inikontaltmatchbasin
bbdkg =0dP='8by
=Inr
=b a
W:
rnorethanlow— .
almmin(P.
0
No trash or debris In lhe
==In
MM d�=.==fto.
catch bask
1he botiorn of basin b invarl: of to lowest
Lko or W d tw basin, txA In no cam
IWM#m a nh*nwn of six Incties clearance
heinvertafthis
lowest PkW.
Trashor 'a' I in any inlet orcudd pipe
b" and cubg p4m free
bkwJdrg ame, twn tG of Its height.
of tash or debris.
Deadenin orvegubbmthatcouM
generelooderelhat could cause
or clarVerow g— (a&. m&—).
149, anlrnak or
=-"'- within
Z
Sedirnent
Sedirnent (in the basin) diat emmdB OD
?b sedireent ki the catch
d= ==fmin
beeln
=bib or ouit of the basin, buit In no cam
thanaminimumdGind clearance
*crn the secliment surface b the krvsrt of Ow
lowest pkw.
struch"
Top slab has holes MW tfun 2 eqAre,
Top slab Is fte of holes
Dan "eZ.
inches or awcM wider than 19 inch
wW cracks.
W"
Top Slab
(Intent to bD ruke sure no rasterial Is running
bib bssln�
From not sittkig I ush on lop d*, Lo..
separation of rnore than 341 Inch ofthe from
ftffl 00 IDP SISIX ftGnIG not WW*
Freme Is dftg *Ah on
the daer dnp or top dab
and " aftadved.
attached
Fradursear
cradw In
Basin Vftlls/
Bctkml
Makdanance person kx1gas turt struchn Is
unsound.
Basin reoaced'cr mpahW
lodesimstandaide.
Omit Net has separated or oacked widler
than'102 kKh widimW than I foot at to
Joint of ow Mwx"=or any evUenoo of
sciparliffmantering dbadrillwao
cracks.
Plin Is v%pouted and
secure it basin wall.
settlernew
IF blum of basin has created a ad*,
Basin reFlaced or repaired
Missagmnent
triclon. or dedp problem.
b deep skandwds.
VVetallon
Vqpbbm Wowing; acmas avel bbddrg rnors
ihan 10% oflhe basin opwft.
No vegetation blocking
qxWM to bash
ininkW"=Joints
te less tm
sbE Inches spart.
No vegatallm or root
Wvw1h pesent
I I
4,36 Vokn3o V— Rutoff TreaDmint SWs AuqusfM
Full Dminage Report
WillowMe Townhomes
Page 26
May 2008
SECTION 6 - MAINTENANCE AND OPERATIONS MANUAL
No. a - Catch Basims
Defea
Cavdillms Men unifteummme in lbo*d
VWm
=00=
and Plobitbri
Ses"Datenlion Plondir (No. 11
No pohdon, F"Int
Catch Basin
Cover Not in
Cow Is ndming or only pmtkdy in plam
Catch basin cover Is
Cow
place
Any open catch basin mqdres nialmlartance.
doeed
LOC"
m.h.l.
Mechaniern cannot be opened by one
amirtenum person wth proper loole, Bots
Mechardern opens wilh
propertods.
HoMbrking
Imbfim. havelmathanWinichofftead.
C.omDfflkxd
tmRamove
Oneirmin fmarmopereoncennotrarnovelld
or- appog namal liffing pressure
Cover can be mmoved by
onernsinlenanosperson.
go "kaep Cover torn 000bv off
4
Ladder
Ladder Rungs
Unamis
Ladder Is umak due lo roleaft runge. not
WW* &KW to Main wd.
Ladder ffeels design
standards and alum
nimligmenk. rust cracks, or sharp ecose.
mainlanarm person ode
access,
MOW Grebe
Grab opening
Grate w1h opecting wider than 7/8 Inch.
Grate opening mods
(NApplicable)
u
design stard3rds.
Trash mid
Trash anddebris #mg is blocling more lhan
Grate tee of trash and
debris.
IDebris
Dernageclor
Grate missing or broken mernber(a) of the
Grate Is In place mid
missing.
. grate.
meem design standards.
W. a - Wwls Sufflars (s.9, Trash Rocks)
Makdoname
Dated
caldlipa VANE notatenonmis
fbaft Men
Components
Wrilmams Is Peftromed
General
Trashand
Trash or debris thed 13 Fkqft rears
ftriff cism to design fbw
Debris
than 20% of ft opm*W in the barler,
mpaolly,
Mew
D
m
Bers are bent otA of shape rnom lhan 3
Iniches.
Berm=uftnobendernare
than
Bam
Bers we Wesing or entire barrier
missirv.
Bars in plaos smording to design,
Sam we bose and FW to caLmaing 9D%
deterlorelion to any pot of barder,
Barrier replaced or reFaired to
deeignslanclandkk
lrdatK)Ldd
Pipe
Debris barrier miesing or not aMKtwd to
plim
BWi9r " 8d9d0d to *9
ALWat 2M V*bn2o V — Rw)cff fta&*d WDs 4�V
FtLU Drainage Rq*rt Page 27
Willowdale Townhomes May 2008
41 .
SECTION 6 - MAINTENANCE AND OPERATIONS MANUAL
No. 12— Wetvauks
aintonance
n afac
Ccr� ften IN, P N, F 1
RewftEqwx*edWhw
Is Nsed4d
llak*mancelePorta
Genand
Tradtl0able
Tresh and delwb eacurrRAsked
Rernove Irwh and debris km VQlA
AcmffmAnNon
In vwA pipe or IrdedbL"
9:=� and non-
Secknett
Sedhad acmumMor; In vmA
RernmesedimentfroruvwA
Accumuldon in
VwA
la"m exceadetwedeodthe
sedirsent zone pkts 64nches.
Doneged Pip"
WaUlouftrng damaged or
brakenan Inneeddmpair.
Pipe repaked and- replaced
Aowee Cow
DwwgedM
cow cannot be opened or
nemoved, eaped* by one
Poe repaired or replowd to POW
wori" sPechiculforle.
wodft
p9r90M
Ventilation
Vardadon am bb*M or
BbcMV rnalwW mnwwd or cleared
ougged
ion vertblon am& A spedfled %
of the vm* surlaw am must provide
ventbilon to the vatAt InWor (we
dssW qpedflcatiorw)�
vauk sbucture
V" mplowd or repalre made so
Dere
Includ". Cradca
In Wells BOUDM
pwmvW ddwnkm #W Me
mmik Is not stuaWrally sound.
th3tvad., design specfficatione
and Is alruftegy smind.
" to F.
lop Slab
Ouckswider than IrVnch Sk
V" nnoked so tat no cracks GKIst
thejck_t of an Pipe
I al kdetbAlat
cr evidence scm parodies
entering twough tw crudw
wkier then lX4nch atthept dthe
hkft4AM pipe.
Ballies
BMH- —rodng. cracHng,
wping —Lbr shcy"V dg- of
faWre daturnined bY
Balm repaired or reoscad bo
epw9badons.
as
rnwrowancefinspewon staff.
Aocesel
I a Is corroded or
Laddw mpbwd or repaired to
Damage
deterbrateck nd funclb
pqxldy. riot atadwd I:ft
-r— r2l wd is ads b use as
dokmirwd by Inspection personnaL
struck" wwailk rnlasing rungs.
twas cracis an�
cl,on.d We-
Repkm dgn warning of owAned
apke et*y reqLdrwnm & Ladder
and ef*y,wdkaft corrow wAth
m1wing.
06MshndwdL
Ausug 2M Vokme V— Rurmff TreaM*d BWs 4-43
Full Drainage Report
Willowdale Townhoines
Page 28
May 2008
SECTION 6 — MAINTENANCE AND OPERATIONS MANUAL
Na IS —3taniftw" fledcanpcm0ftni
K&k*Mww
Milmd.
Cmdkm Whom Uakftmnw Is
R=omft ?;%vom
'bwad
BakmQawW
Sedkknwd
I
Seckment daA no Nc a a 02&kwhm
Pb sedinierd dqxmb w! dd
Vm*
PAcumulMlon on
Media
do peffneAft of
;:�M "ad _
MWWfooft
Sedknert
Sodkeit d"M aweeds 64nchm In Arst
M sedboactidepoefte h vauk
ftcummkidon In
ctwnber.
boft, ofWchurnber.
Vbuk
Traswoebis
Trash mid debris scumfted on
Tnuh and dalrb mrwmd fim
Muns6don
owWc* Mar bed.
Owcornpodfilerbed.
Sodknwt In
Dub
pf"actean-
Won drain pVm cbmoik% bsoome
ful wkh sedbrant and/or debris.
Sedirment and dable mnoved.
Outs
Dirnaged 131"s
Z=dL,6r.-=,,Vad or
sedernwTL
134- repaired andfar replaced
Aocess Cover
DwnagadMot
wodft
Cover cwvxA be opened; ore person
;W t� ningnormal,
nkW sk of
c=cL
DOW.
CANW ;3:;:=
vml* or
relieced.
Vwk Stuchre,
Inckides Cracim
Cracim wider tm V24nch or evidence
of sol parWas enbAng the dnxiure
Vaukreplacedorrepalrerneds
so that vwA rnests design
In Vbk sct�
Dm"gs
Frarna 'Zor
em cr� or
--- -
mw,.ut= r=Wmay
VeMcoona and Is dructwa]�V
mund.
Top Slab
sound.
Cmb Wer fm 1&bich at"
any Irdetb" p1pe or evidence
WW- enks� drouo Via cradw.
Vaut repahW so that no cmcke
aWd wider tAn W-Inch at ft
joird dthe Wakk" pipe.
Bumes
Befts ca. ing, cruddrV wwpbV.
BemBe or replaced to
doWmdrwdby
Person.
Access I
D-naged
Ladder b corroded or delarkwated. not
not wm*
vmt m6*V nmige.
Ladder replaced or repaired and
nmft SpKr"&m ow is
safe b too as dakmdned by
a w1m. and n*mV4FmcL
bwpodbn personnel.
Below Gmund
CwWdge Type
CaMost Media
OWNdom cfvmtsr#moqjhtheF=
tales bnger tm 1 hm. arm
Media cwktlgm replaced
I
Short CkmAng
Rom do not Foperty enlarifter
cwWdg-.
Ffter cutrkigem reMaced.
ALwal 2M MWWm V— Ruloff Tmatmad SWS 4-47
FuH Drainage Report Page 29
Wiflowdale Townhomes May 2008
APPENDIX A - CONVEYANCE CALCULATIONS
APPENDIX A — CONVEYANCE CALCULATIONS
Full Drainage Report Page 30
Willowdale Townhomes May 2008
APPENDIX A - CONVEYANCE CALCULATIONS
APPENDIX A — CONVEYANCE CALCULATIONS
cabAatim opfions.1,1 Cedwent Swakuy Con"t Swakvy!' Nocle SummarY 1 Inlet Swwkvy
-f--j
Label
Element Type
Subnetwork
Flow (Total
Flow 'Total
Elevation
Elevation
Energy Grade
Energy Grade
OLdall
Surface)
out)
(Ground)
(Invert)
Line (in)
Line (Out)
(ftals)
W/s)
(f 0
(ft)
00
00
CB 3 (STORM)
Manhole
OF-2
0.31
0.72
440.32
437.7.1
437.71
CB 2 (STORM)
Manhole
OF-3
0.31
0.34
440.28
428.42
437.70
437.70
CB 4 (STORM)
Manhole
OF-2
0.42.
0.42
440.13
435.08
437.71
437.71
CD 5 (STORM)
Manhole
OF-3
0.09
0.09
438.67.
434.20
437.70
437.70
EXIST CO (5...
Manhole
OF-3
0.00
0.00:
437.48
430.10
436.97
436 . 97
C B I (STORM)
Manhole
OF-3
0.00
0.00
436.97
430.23
436.97
436.97
FuH Drainage Report Page 30
Willowdale Townhomes May 2008
APPENDIX A - CONVEYANCE CALCULATIONS
Worksheet for 12-inch Pipe
Project Description
Friction Method Manning Formula
Solve For Full Flow Capacity
Input Data
Roughness Coefficient
0.012
Channel Slope
0.00500
ftift
Normal Depth
1.00
It
Diameter
1.00
2.73
ft
fP/s <-- <X.JL- CAP.
Discharge
Results
Discharge
2-73
ft3/S
Normal Depth
1.00
It
Flow Area
0.79
ftA
Wetted Perimeter
3.14
ft
Top Width
0.00
It
Critical Depth
0.71
ft
Percent Full
100.0
%
Critical Slope
0.00692
fttft
Velocity
3.47
Itts
Velocity Head
0.19
It
S pecific Energy
1.19
It
Froude Number
0.00
Ma)dmum Discharge
2-94
ft3/s
Discharge Full
2.73
f F/s
Slope Full
0.005100
ft/ft
Flow Type SubCritical
GVF Input Data
Downstream Depth
0.00
It
Length
0.00
It
Number Of Steps
0
GVF Output Data
Upstream Depth
0.00
ft
Profile Description
Profile Headloss
0.00
ft
Average End Depth Over Rise
0.00
%
Normal Depth Over Rise
100.00
%
Bentley Systems, Inc. Haestad Methods Solution Center
Bentley FlowMaster [0&01.071.001
U3042M 5:34:39 PM 27 Slernons Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-766-IWS Page I of 2
Fufl Dminage Report Page 31
WiHowdale Townhomes May 2008
4
APPENDIX A - CONVEYANCE CALCULATIONS
Worksheet for 18-inch Pipe
Project Description
Friction Method Manning Formula
Solve For Full Flow Capacity
Input Data
Roughness Coefficient
0.012
Channel Slope
0.00400
ft1ft
Normal Depth
1.50
ft
Diameter
1.50
ft
Discharge
7.20
ffl/s V:;)LA- CAP
Results
Discharge
7.20
fV/s
Normal Depth
1.50
ft
Flow Area
1.77
ft2
Wetted Perimeter
4.71
ft
Top Width
0.00
ft
Critical Depth
1.04
ft
Percent Full
100.0
%
Critical Slope
0.00587
ft1ft
Velocity
4.07
ftts
Vebeity Head
0.26
ft
Specific Energy
1.76
ft
Froude Number
0.00
Ma)dmum Discharge
7.74
fl:31s
Discharge Full
7.20
fF/s
Slope Full
0.004M
fttft
Flow Type SubCrffical
GVF Input Data
Downstream Depth
0.00
ft
Length
0.00
ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.00
ft
Profile Description
Profile Headloss
0.00
ft
Average End Depth Over Rise
0.00
%
Normal Depth Over Rise
100.00
%
Bentley Systems, Inc. Haestad Methods Solution Center
Bentley FlowMaster (08.01.071.001
4r=20011 5:35:32 PM1 Z7 Slemons Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-756-IM Page I of 2
Fuff Drainage Report Page 32
Wdlowdale Townhomes May 2008
C.
CITY OF EDMONDS
121 5TH AVENUE NORTH - EDMONDS, WA 98020 - 425-771-0220 - FAX 425-771-0221
DEVELOPMENT SERVICES DEPARTMENT Website: www.ci.edmonds.wa.us
October 161h, 2009
MEMO TO:
Edmonds School District
Verizon Northwest
SNOCOM Police and Fire Dispatch
SNOPAC
Snohomish County E911
U.S. Post Office
Snohomish County Assessor's Office
Snohomish County Information Services
Snohomish County P.U.D.
Puget Sound Energy
Edmonds Fire Department
Edmonds Police Department
Edmonds Utility Billing
Edmonds Public Works
Edmonds Building/Street File
Edmonds Address Files
Lynnwood Disposal
Comcast Cable
Waste Management Northwest
GARY HAAKENSON
MAYOR
Please be advised that the attached addresses have been added to the Edmonds, WA
addressing map. 20730,20732,20734 and 20736 7611, Ave W (Willowdale Townhomes).
The previous address 20728 7&h Ave W structure has been demolished under permit
BLD2008-0351.
Tax ID Nu�mber: 00614300001000
Permits: BLD2008-0352 3-Unit (20730), BLD2008-0353 5-Unit (20732), BLD2008-0354 5-
unit (20736) and BLD2008-0355 4-unit (20734) Multi -Family Building permits to be issued
at a later date.
If you have any questions regarding this letter, please contact me at 425-771-0220 or
Umbaugh@ci.edmonds.wa.us. Please contact me if you wish to be removed from this list.
Res, ectfrull.11y,
Theresa Umbaugh
Perrrdt Coordinator
Edmonds Building Department
L\Tei-np\DST's\M aster Letters\New Address 10/16/2009
Incorporated August 11, 1890
Sister City - Hekinan, Japan
6"1
�20237
20302
7707
8307
203RD PL . S
8308
20232
2030
8
20331 0
20312
2D323
2031
0
Xf
MA
Edgewood
jj:
540
0
0
r�z
22
Baptist
11
R R Parlung 12
204
7934 7910
Church
20330
20406
20404
Q
20402
7725 7717
77D9
20407
20406
20414
2047-H pL
20
0
W 20412
SVV
20413 20416
20416 L SW
20416 1
Lu
20415
28 26 z 20421
Cv
2G414
2D41 5 'jLQ41
20421 — 7726 T718
>
7710 <
cc
20427
2D423
3:
20424 20421
M
rz
20419
2 0
205TH S
0 H S
20416 ULI zD417 20430
slog 20U430 > 20429 >
— <
Lu 20429
> 20427 772S
<4 2043 M
20431 20502
.1
8110 20504 20503 20510
.110
20511 20504
M 20SO3
7731
20513
-113
—
— —
20503 205TH
PL W
OPM
2osis
20512 20511 20512
20513 20512
205
20511 20509 7724
.20506
2 M
".
20513 5 20514
'i
20517 20514
20516 20S20
20 4
rz
(-) 20518
20513
Ridge.
a R
20524 20525 20516
-J�
20 6 2OS2S
S
:: 1 [2"0.6
Park20608
20607 8006 -
206TH ST SW
7828 7812
7818
20617
20608 —
20816 20615
20616
20616
61S 78,c) 612
W
> 20625
< —
20624 W 20623
— > — 20628
7901
20620 7808 20622
20616
20622 20620
r Cedar
41,
20630 Q 20631
z
<
20630 1- 20629 —
2D6TH PIL
2o ,
5
—
St no 11 Stone I
r.
t
20704 20702 OD 20701
20704 no 20703 20702
7904 20628 CL 20630
14 2062
— FE
20629
20703
Hampton Court
20632
20709
20713
—
710 20709 20710
7909
�7806
20704
20708 le 20707
2071
20709
7905
Murk,n
2.0719
20721 20720
20722
207TH PL
2011 0711
17
208TH ST SW
20728 20727 20725
7918 79,0 7906
20724 20725 7802 20728
20 27
Ednicincts Dental
20728 0
1 8304
805 208 F-- 7
7T;-
20800 20802
2D810
8308 8302
> 20807
2OB09
20810
20811
20810
M.
20900 18310
!-'o
3; 20815 20814 208TMH SW
2�
20815 CL
--
8312 8314
20901
LU 20a23 4 3: 8132
Lu
8112 2OB20 _j 20821 20818 0
co
n'
_18
720829 ZUB24 zutwi —
201119
—
2OB16
2081
2081
a 20831 20825
M
2OB28 2OB27 201126
:t
20M
2082S
201122
cr 0
8
7911 2083() W 20829
20903 20904
z
"co
W —
20901
Chalet Royale
> 2090
.4
20901 20904 2090
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CITY OF EDMONDS
121 5TH AVENUE NORTH - EDMONDS, WA 98020 - 425-771-0220 - FAX 425-771-0221
DEVELOPMENT SERVICES DEPARTMENT Website: www.ci.edmondsma.us
October 161h, 2009
MEMO TO:
Edmonds School District
Verizon Northwest
SNOCOM Police and Fire Dispatch
SNOPAC
Snohomish County E911
U.S. Post Office
Snohomish County Assessor's Office
Snohomish County Information Services
Snohomish County P.U.D.
Puget Sound Energy
Edmonds Fire Department
Edmonds Police Department
Edmonds Utility Billing
Edmonds Public Works
Edmonds Building/Street File
Edmonds Address Files
Lynnwood Disposal
Comcast Cable
Waste Management Northwest
GARY HAAKENSON
MAYOR
Please be advised that the attached addresses have been added to the Edmonds, WA
addressing map. 20730, 20732, 20734 and 20736 7611, Ave W (Willowdale Townhomes).
The previous address 20728 7&h Ave W structure has been demolished under permit
BLD2008-0351.
Tax ID Number: 00614300001000
Permits: BLD2008-0352 3-Unit (20730), BLD2008-0353 5-Unit (20732), BLD2008-0354 5-
unit (20736) and BLD2008-0355 4-unit (20734) Multi -Family Building permits to be issued
at a later date.
If you have any questions regarding this letter, please contact me at 425-771-0220 or
Umbaugh@ci.edmonds.wa.us. Please contact me if you wish to be removed from this list.
Res ectfrull.11y,
Theresa Umbaugh
Permit Coordinator
Edmonds Building Department
L\Temp\DST's\M aster Letters\New Address 10/16/2009
Incorporated August 11, 1890
Sister City - Hekinan, Japan
r
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--- - . I
CITY OF EDMONDS
121 5TH AVENUE NORTH - EDMONDS, WA 98020 - 425-771-0220 - FAX 425-77.1-0221
Website: www.ci.edmonds.wa.us
DEVELOPMENT SERVICES DEPARTMENT
October 161h, 2009
MEMO TO:
Edmonds School District
Verizon Northwest
SNOCOM Police and Fire Dispatch
SNOPAC
Snohomish County E911
U.S. Post Office
Snohomish County Assessor's Office
Snohomish County Information Services
Snohomish County P.U.D.
Puget Sound Energy
Edmonds Fire Department
Edmonds Police Department
Edmonds Utility Billirig
Edmonds Public Works
Edmonds Building/Street File
Edmonds Address Files
Lynnwood Disposal
Comcast Cable
Waste Management Northwest
GARY HAAKENSON
MAYOR
Please be advised that the attached addresses have been added to the Edmonds, WA
addressing map. 20730,20732,20734 and 20736 7611, Ave W (Willowdale Townhomes).
The previous address 20728 7&h Ave W structure has been demolished under permit
BLD2008-0351.
Tax ID Number: 00614300001000
Permits: BLD2008-0352 3-Unit (20730), BLD2008-0353 5-Unit (20732), BLD2008-0354 5-
unit (20736) and BLD2008-0355 4-unit (20734) Multi -Family Building permits to be issued
at a later date.
If you have any questions regarding this letter, please contact me at 425-771-0220 or
Urn.baugl_i@ci.edmonds.wa.us. Please contact me if you wish to be removed from this list.
Res, ectrfuHy,
Theresa Umbaugh
Permit Coordinator
Edmonds Building Department
L\Temp\DST's\M aster Letters\New Address 10/16/2009
Incorporated August 11, 1890
Sister City - Hekinan, Japan
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CITY OF EDMONDS
121 5TH AVENUE NORTH - EDMONDS, WA 98020 - 425-771-0220 - FAX 425-771-0221
Website: www.ci.edmonds.wa.us
DEVELOPMENT SERVICES DEPARTMENT
/"?C. isc)13
October 1611,, 2009
MEMO TO:
Edmonds School District
Verizon Northwest
SNOCOM Police and Fire Dispatch
SNOPAC
Snohomish County E911
U.S. Post Office
Snohomish County Assessor's Office
Snohomish County Information Services
Snohomish County P.U.D.
Puget Sound Energy
Edmonds Fire Department
Edmonds Police Department
Edmonds Utility Billing
Edmonds Public Works
Edmonds Building/Street File
Edmonds Address Files
Lynnwood Disposal
Comcast Cable
Waste Management Northwest
GARY HAAKENSON
MAYOR
Please be advised that the attached addresses have been added to the Edmonds, WA
addressing map. 20730,20732,20734 and 20736 761h Ave W (Willowdale Townhomes).
The previous address 20728 761h Ave W structure has been demolished under permit
BLD2008-051.
Tax ID Number: 00614300001000
Permits: BLD2008-0352 3-Unit (20730), BLD2008-0353 5-Unit (20732), BLD2008-0354 5-
unit (20736) and BLD2008-0355 4-unit (20734) Multi -Family Building permits to be issued
at a later date.
If you have any questions regarding this letter, please contact me at 425-771-0220 or
Urribaug1-_i@ci.edmonds.wa.us. Please contact me if you wish to be removed from this list.
Res�, *ectfffulllly,
Theresa Umbaugh
Permit Coordinator
Edmonds Building Department
L\Temp\DST's\A4aster Letters\New Address 10/16/2009
Incorporated August 11, 1890
Sister City - Hekinan, Japan
2
20302
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7909 7903 21125
21117 V
21
7907 21118
W,11(Wale 7901 2111. 7729 2112e
21121 7609
8330
11226
21214
21207
21215
EI2
81 D4
8
1
6— Town
Square
212TH ST SW
7530
ca
21222
7924
office
21223
8016
--
7
8020
A
21313 Arts
4.
ui
-Ti=L
i.
L j."
i
PROJELT !RFOMATWH
LRI�T—R
MIX
F.MMW
-4
M
lw%
20
Ff17-2
- 24'
UMD.�
SEC-. 19, T* b2t)
AC'\
1 2�'
15',
42'
. . . . . . ....
. . . . . . . . . .
---- -- Renc iark
27'
— -- A sp
PRIVAV.
Yt,
r I
AW HEME AS �=U
4v - -
OPICAL PARAING DIMEN90NS
WWM. PAWNG SPAM OWENSIONS
PARXWG CALCULAPONS
UM SPACES- 2 PER DU - 2XI7- 34
SPACES PROMDED- 35 SPACES
NTS
CITY OF EDMONDS
121 5TH AVENUE NORTH - EDMONDS, WA 98020 - 425-771-0220 - FAX 425-771-0221
DEVELOPMENT SERVICES DEPARTMENT Website: www.ci.edmonds.wa.us
October 161h, 2009
MEMO TO:
Edmonds School District
Verizon Northwest
SNOCOM Police and Fire Dispatch
SNOPAC
Snohomish County E911
U.S. Post Office
Snohomish County Assessor's Office
Snohomish County Information Services
Snohomish County P.U.D.
Puget Sound Energy
Edmonds Fire Department
Edmonds Police Department
Edmonds Utility Billing
Edmonds Public Works
Edmonds Building/Street File
Edmonds Address Files
Lynnwood Disposal
Comcast Cable
Waste Management Northwest
GARY HAAKENSON
MAYOR
Please be advised that the attached addresses have been added to the Edmonds, WA
addressing map. 20730, 20732, 20734 and 20736 7611, Ave W (Willowdale Townhomes).
The previous address 20728 7&h Ave W structure has been demolished under permit
BLD2008-0351.
Tax ID Number: 00614300001000
Permits: BLD2008-052 3-Unit (20730), BLD2008-0353 5-Unit (20732), BLD2008-0354 5-
unit (20736) and BLD2008-0355 4-unit (20734) Multi -Family Building permits to be issued
at a later date.
If you have any questions regarding this letter, please contact me at 425-771-0220 or
Umbaugh@ci.edmonds.wa.us. Please contact me if you wish to be removed from this list.
Res, ectfully,/
Theresa Umbaugh
Permit Coordinator
Edmonds Building Department
L\Temp\]DST's\N4aster Letters\New Address 10/16/2009
Incorporated August 11, 1890
Sister City - Hekinan, Japan
7707
20222
07
�.SW,
20237
RD,P
83 'ZI RD,P
20232
203a
20331 82 7 11209
20323
2031
2M14
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82 .5 8207
r�
Baptist
P Min
204TH aT §IIW
12
7934 7DlO
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Church
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A
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e
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7725 7717
7709
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20414
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PLSW
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20415 20416 20415
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20709
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=-
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e.
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SEC. 19, T* +21q)
4
w1woo"411W
An
w
ULM
2
L
X�
Asp
L
24'
40
Typ'.
PROJEL� INVOMATION
A- I
P.. -1 -1
711
genc iark
rtPICAL PARAINC DIMENSIONS
'ARKLNO SPACE DWENSIONS
PARKING CALCIJLA71014S
REWRED SPACES- 2 PER DJ - 2X17- 34
SPACES PRO%iDFD- 35 SPACES
Elm
4,611
NOTE:
1. SIGNAL LIGHT OPERATION SHALL BE
SWITCHED OVER TO FOUR- WAY
FLASH.
2. TRAFFIC CONTROL FOR STORM AND
SANITARY SEWER CONSTRUCTION: A
UNIFORMED POLICE OFFICER WILL BE
REQUIRED AT THE CONTRACTORS'
EXPENSE TO COUNTERMAND THE
TRAFFIC SIGNAL
3. DISTANCE BETWEEN SIGNS SHALL BE
1 OD"FOR-RESIDEgft*lf-S`�.
DISTANCES MAY VARY AS APPROVED
BY THE ENGINEER.
4. FLASHING BEACON SHALL BE
INSTALLED AT EACH SIGN FOR
NIGHT-TIME USE.
5. FLAGGERS REQUIRED TO CONTROL
TRAFFIC WHENEVER THE
CONTRACTOR MUST INTERRUPT
TRAFFIC FLOW TO ACCESS THE WORK
SITE WITH MATERIALS OR EQUIPMENT.
6. LANE CLOSURES SHALL BE LIMITED
TO THE HOURS OF 9AM-2PM WHEN
COLLEGE PLACE SCHOOLS ARE IN
SESSION.
LEGEND:
(2 CONE OR CHANNELIZING DEVICE
Ilk
L��_� HAUL ROUTE
TABLE A
TAPER LENGTH
SPEED
(FT)
CONE SPACING
(MPH)
ALONG TAPER
LANE
WIDTH
(FT)
106
1 12'
30
150
1 180
25
WORK AREA AND CONE
LOCATION FOR SEWER AND
STORM CONSTRUCTION
§
A�l
J,
f-4bA0.
76th AVENUE WEST
TRAFFIC CONTROL PLAN AND- HAUL ROUTE
WILLOWDALE , TOWNHOMES NO SCALE
FOR SANITARY AND STORM SEWER INSTALLATION
lkc. 11b,
'YO
SHEET I OF .1
0 01
A
140( TRUCK WITH
FLASHING
BE I ACON OR WITHt
\J
POLICE
OFFICER
A0,
X 4-
X
'N, 10, 1�
0+% 1
X
APPROVED AS NOTED
BY E7eNFRING
Date:
FLURYMYRICK
&ASSOCIATES, INC.
ENGINEERING - PLANNING - SURVEYING
3409 McDougall Avenue, Suite 102
Everett, Washington 98201
Phone 425.259.0964
El
I t4oi
NOTE:
1. FLASHING BEACON SHALL BE
INSTALLED AT EACH SIGN FOR
NIGHT—TIME USE.
2. DISTANCE BETWEEN SIGNS SHALL BE
100' FQR-R��&
DISTANCES MAY VARY AS APPROVED
BY THE ENGINEER.
3. FLAGGERS REQUIRED TO CONTROL. +0
TRAFFIC WHENEVER THE
CONTRACTOR MUST INTERRUPT
TRAFFIC FLOW TO ACCESS THE WORK
'S'
SITE WITH MATERIALS OR EQUIPMENT.
1 4)
0�1
x
0
0�1
LEGEND:
CONE OR CHANNELIZING DEVICE
HAUL ROUTE WORK AREA AND CONE
LOCATION FOR WATE
CONSTRUCTION
TABLE A
TAPER LENGTH
SPEED
(FT)
CONE SPACING
(MPH)
ALONG TAPER
(FT)
LANE WIDTH
10. ,
r 12.
30
150
1 180
25
A fp
SHEET 2 OF 2
0;11
TRUCK \MTH OR ZS> WITHt
FLASHING
BEACON
�Id
-7,\
P
C
76th AVENUE WEST
TRAFFIC CONTROL PLAN AND HAUL ROUTE
VALLOWDALE TOVIINHOMES NO SCALE
FOR WATER MAIN INSTALLATION
0
APPROVED AS NOTED
.- , "VUI1Vj:j:Ijj
By ENGINEER
L
Date:
FLURMYRICK
&ASSOCIATES, INC.
ENGINEERING - PLANNING - SURVEYING
3409 McDougall Avenue, Suite 102
Everett, Washington 98201
Phone 425.259.0964
w
01 1r1AK1T1r)AA1M9:P
171�
y
A PORTION OF THE SE 1/4 OF SEC 19, T27N I K4t:, VVM
MUMMY @@Egg
"tJO Lipr I IVW-I"
5,161N ON A61r*
fo A0 0 a Ns
po smm4A" ,
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elb W41-00,c 1qzdpw - -
CHANNELIZATION AND SIGNAGE NOTES
n1 INSTALL "NO PARKING -FIRE LANE" SIGN.
[10
REMOVE EXISTING 'DO NOT ENTER SIGN AND POST.
"THRU-ONLY"
nil
MODIFY OR REPLACE EXISTING INSIDE SIGNAL HEAD TO
F21 REMOVE EXISTING ARROW.
CREATE THE FOLLOWING SIGNAL INDICATION FROM TOP
n3 REMOVE EXISTING -LEFT-ONLY- ARROW. AND
TO BOTTOM (ALL 12- INDICATIONS): RED BALL,
YELLOW BALL, GREEN BALL, GREEN LEFT TURN ARROW.
REPLACE NTH "LEFT/THRU SHARED" ARROW.
ENSURE SIGNAL HEAD CLEARANCE TO ROADWAY IS A
F41 INSTALL 24"06" R10-1201 "LEFT TURN MUST YIELD"
MINIMUM 16.5 FEET, OR CITY STI) CLEARANCE, WHICHEVER
IS GREATER.
SIGN ON.SIGNAL MAST ARM ADJACENT TO INSIDE
SIGNAL HEAD.
n12
MODIFY OR REPLACE EXIs TING INSIDE S IGNAL HEAD TO
I
RCK�AC�E EXISTING -LEFT-TURN ONLY- M . AST
-
"LEFT/
CREATE THE FOLLOWING SIGNAL INDICATIONS FROM TOP
TO BOTTOM (ALL 12" INDICATIONS): RED BALL, YELLOW BALL,
R3-6
_ ;S� ��t
ARM -MO x
R7 �GGN.
GREEN BALL, GREEN I EFT TURN ARROW. ENSURE SIGNAL HEAD
OL
L U S
THR LANE U OL SIGN.
Cl EARANCE TO ROADWAY IS A MINIMUM 16.5 FEET, OR CITY
,n DAVEMENT
STD CLEARANCE, WHICHEVER IS GREATER.
n6 INSTALL 20LF OF DOUBLE TtLLUVV FNM W16S .
MARKINGS. 0 n13 INSTALL ADDRESS SIGNAGE PER CITY STANDARDS. L-r OkIL411 6167 Nj OTJ
F71 INSTALL 0 WIDE STOP BAR. (" 5, TWW, fMt) n14 4' WIDE LINE. ftm 1;�p. \,p-13 WVC&Ag�Yf
INSTALL NEW SIGNAL INDUCTION LOOP VEHIL;LL DEIECIOR
PER CITY OF EDMONDS STANDARDS. CENTER LOOP IN fj
THE OUTBOUND VEHICLE LANE.
fpA\Mj1t5, 012\qf,- Mo 1W.9kk 1ORM(,
F91 REMOVE EXISTING -THRU-ONLY- ARROW PAVEME NT M\jm WOPOZ-9 P"Iz
MARKINGS. 1157wTpfr-13C;I5_ AT 1L&T1_
L009 SliftV,09-
,� 5-fof w—
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4_j
4'4.A-
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4
4
.4
A� %.f W 161 1 %0 4. a Nmf a V V a
., . , : .1 ..
MURPHY BUILDING COMPANY
6203 202nd STREET SW
LYNNWOOD, WASHINGTON 98036
425.775.3388
ATTENTION: BOB MURPHY
FLURY-VVYRICK
&ASSOCIATES, INC.
ENGINEERING - PLANNING - SURVEYING
3409 McDougall Avenue, Suite 102
Everett, Washington 98201
1 Phone 425.259.0964
U)
w
0
'17
Z
0
F_
W
C)
0
j
SEAL
10. REVISION DATE
APPk0VED
FIRE MARTMENT
—C21'
DESIGN:
RMF
DRAWN:
RLG
CHECKED:
T R Em, FIT FILE
RIVIF
m
SCALE:
F,i
111=201
PROJECT NUMBER:
IVIBC0001
ROESUB
DATE:
NOVEMBER 2008
SHEET NUMBER
DEC 0 12008
CALL FOR
�,z
UTILITY LOCATES
NO BUSINESS DAYS
E
BEFORE APPROVED FOR CONSTRUCTIO
YOU DIG
.11 )A
00
1z
1-800-424-5555
DAT
CITY OF EDMONDS
C7.
OF
EXISTING TRAFFIC SIGNAL
TO BE SET ON "FLASHING"
OPERATION %
< ROAD
WORK
AHEAD
9>",-
W20 I
24" x 30"
5" letter n1unt Lmr. RoAD W20-1
STOP BE NE LANE AHEAD WORK
PREPARED ROAD AHEAD
HERE 0 ^NELANE
0 STO" AHEAD
W21
R 0 AD
W 0 RK
nAHEAD
76 TH "E W �*W20-7B W20-4
W20-7A
jo - C7 Fill
RIG%, --ALP
—0 0 0. 0
0 0
9 0 r
W. -*,jj _F`
ca 0 AAFB — 111
0 =_71
41 0 17=
_Z. 0 41 00
0 0 0
—0 )911
_4j 4P
76 TH "E W
W
0
Z
::d 0
41 41 *1 1 0
U
"Id
Sw
aw;
>
M-11
A 2
20M P. aw. .
2 1
7
61
R1
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a_ 7 -2 1�pw
L L. J!, i
it
L '17 1, 1 1 11 1 i
4, - _. 2112�g
-.Stm
H
2ffhs�
5. S, Sw :,FTXDA� 9
fl *�V7 I.,
!LZ!'19FE ��_
is
: d
d
rl
llr,;r "�;L
[Ao�
1 17
i�2-_'.. P1 SW
s. S-W::
Vki :,� M.p d�t. 02009 T.I. Age TeM
. ..... kof Up
VNICINI TY M A195-
MILRIP- IRAN
FLAGGER
TEMP. TRAFFIC SIGN (FACING RIGHT)
EXISTING TRAFFIC FLOW
+
TEMP. ALTERED TRAFFIC FLOW
0
CHANNELIZATION DEVICE
=WV
WORK VEHICLE
N
lit
24" x 30"
5" letter
STOP
HERE
e_
01/1'.\ W20-7A
T
<0 >
W20-713
BE
" W20-A
,'UNL LANIL'
ROAD
AT HEAD
W20-1
ROAD
WORK
AHEAD
d
Iwo M'41.
'Arnl',4
'12
..0
�1. A%
THREE -SEQUENCE TRAFFIC FLOW
(ONE INTERSECTION LEG AT A TIME*&
CONSIDERATIONS ARE MADE FOR LARGE BUSSES& TRUCKS
0
0
4.-
MAL
4,
V
V,
N"
(D
WORKING AREA
(SHADED) \
11DRIMY-C-lal
'T-1
30OLF EXIST 12- ST6kt
S=:1:0.51%
sq------------
t
tt
M
0 Q
0
Z
0
0 n
'011 n
0)
r
%
\ZN
\Z
22'
V,
0
r
is
am
0
SPEED
LIMIT
30
EXISTING
SPEED LIM T
WITHIN TC Z
SIGN SPACING = X (1)
RURAL HIGHWAYS 60 65 MPH
8W,
RURAL ROADS 45 55 MPH
5W
RURAL ROADS & URBAN ARTERIALS 35 40 MPH
360'*
RURAL ROADS, URBAN ARTERIALS,
RESIDENTIAL & BUSINESS DISTRICTS 25 30 MPH
20(r* (2)
URBAN STREETS 25 MPH OR LESS
I W* (2)
ALL SIGNS ARE BLACK ON ORANGE UNLESS DESIGNATED OTHERWISE
(1) ALL SIGN SPACING MAY BE ADJUSTED TO ACCOMMODATE INTERCHANGE
RAMPS. AT -GRADE INTERSECTIONS, AND DRIVEWAYS.
(2) THIS SIGN SPACING MAY BE REDUCED IN URBAN AREAS TO FIT
ROADWAY CONDITIONS.
LONGITUDINAL BUFFER SPACE = B
POSTED SPEED
"o
65
6
LENGTH B (FE
305
1 3W
1 �4q25
�4956701
T6455
BUFFER DATA
TYPICAL PROTECTIVE VEHICLE WITH TMA (SEE NOTE 1)
VEHICLE TYPE
- -_ -LOADED WEIGHT
4 YARD DUMP TRUCK
MINIMUM WEIGHT 15.000 LBS.
SERVICE TRUCK,
(MAXIMUM WEIGHT S14ALL BE
FLAT BED, ETC.
IN ACCORDANCE WITH MANU-
I FACTURER RECOMMENDATION)
ROLL AHEAD STOPPING DISTANCE - 30 FEET MIN.
(DRY PAVEMENT ASSUMED)
NOTES
1 . A Protective Vehicle is recommended regardless if a Truck Mounted Attenuator
(TMA) is available; a work vehicle may be used. When no TMA is used, the
ProtectJive Vehicle shall be strategically located to shield workers, with no
specific Roll -Ahead distance.
2. Night work requires additional roadway lighting at flagging stations. See
WSDOT Standard Specificatons for additional details.
3. Extend Channelizing Device taper across shoulder - recommended.
4. Sign sequence is the same for both directions of travel on the roadway.
5. Channelizing Device spacing for the downstream taper option shall be 20' O.C,
6. For signs size refer to Manual on Uniform Traffic Control Devices (MUTCD)
and WSDOT Sign Fabdeation Manual M55-05.
SUPPLEMENTAL SIGNS TO
BE USED AS FIELD
CONDITIONS WARRANT
BUMP
ROAD
-no ILLUILK
Luubt GROOVED
PAVEMEIrr
WIDWYMES
USE EXYMNI
`0
APPROVED AS NOTED
BY E�91NEERINPI
.oM411 -.011AA.An
_NV I V A .11
Date:—_—
WILLOWDALE 704"WNHONES
16prt 4vekJ
EDMONDS, WASHINGTON
WORKZONE
TRAFFIC CONTROL
PLAN
RICHARD ALLEN —TCS3781.
41V _6
J,:
(43510)
10.
FULL DRAINAGE REPORT
WILLONMALE TOWNHOMES
CITY OF EDMONDS, WA
Preparedfor:
Murphy BuRding Company
6203 202�d Street SW
Lynnwood, WA 98036
Phone (425)-775-3388
Attention: Bob Murphy
I EXPIRES 9/17/,09 j
Prepared by:
�*731 7
FLURY-WYRICK & ASSOCIATES, INC.
3409 McDougall Avenue, Suite 102
Everett, WA 98201
425-259-0964
Prepare&
May 1, 2008
F"
j.. IGINEERING
2008
IEL
0 mo�@ss '
SECTION I - PROJECT OVERVIEW
TABLE OF CONTENTS
SECTION1 - PROJECT OVERVIEW ... . ...................... . ...... . . . ............ . . ... . .............................. . . . .............................. 3
EXISTINGSIT`E CONDMONS, ....................................................................................................................................... 3
PROPOSEDSrM CONDMONS, ..................................................................................................................................... 3
SECTION 2 - CONDITIONS AND REQUIREMENTS SUMMARY ................ . ... . ............... . ...................................... 5
SECTION3 - OFFSITE ANALYSIS ..... . . ......... . ............ . .............................................. . .. . .......................... . ............. 6
UPSTREAMANALYSIS .................................................................................................................................................. 6
DOYMSTREAMANALYSIS ........................................................................................................................................... 6
SECTION 4 - FLOW CONTROL AND WATER QUALITY FACILJTY ANALYSIS AND DESIGN ............... . ....... 16
SITEHYDROLOGY (PARTS A & B) .............................................................................................................................. 16
PARTA - EXISTING SITE HYDROLOGY ................................................................................................................ 16
PART B - DEVELOPED SITE HYDROLOGY ........................................................................................................... 16
WATERQUALITY.................................................................................................................................................... 19
SECTION 5 — TESC ANALYSIS AND DESIGN .............................................. . ........... . ......... . .................................... 23
SECTION 6 — MAINTENANCE AND OPERATIONS MANUAL ......... . ........... . ......................................................... 24
APPENDIX A — CONVEYANCE CALCULATIONS .............................................. . ..................................................... 30
TABLE OF FIGURES
FIGURE1 — VICINITY MAP ............................................................................................................................................ 4
FIGURE2 — SITE PHOTO #1 ......................................... . . ............ . . ............... . . ........................................................... 7
FIGURE3 — SITE PHOTO #2 ........................................ . .............................. . ................................................................. 8
FIGURE4 — SITE PHOTO #3 . . ......................... . ....................... . ...... . . . . . . . ... . . . . ......... . ..................................... .... 9
FIGURE5 — SITE PHOTO #4 ......................................................................................................................................... 10
FIGURE6 — SITE PHOTO #5 . . ...................... . ............... . ............................. . . ... . .............. . ............................... . ...... 11
FIGURE 7 — DOWNSTREAM BASIN MAP ................................................ . ................................................................. 12
FIGURE8 —BASIN MAP . .... . . . ... . ...... . ... . .............................. . .................. . . . . . ......... . ............ . .............. . .... . . . ... . 13
FIGURE 9 — EXISTING CONDITIONS ........ . ............ . ..................................... . ... . ......... . .......................................... 14
FIGURE10 — SOELS MAP ................... . .. . ........... . ....... . ................................................................. . ............. . .............. 15
FIGURE 11 — DEVELOPED CONDITIONS ................................ .................................................................................. 22
Full Drainage Report Page 2
Willowdale Townhomes May 2008
SECTION I - PROJECT OVERVIEW
SECTION I - PROJECT OVERVIEW
EXISTING SITE CONDITIONS
The project site is developed with an unoccupied professional building and associated parking. The
perimeter of the site is ringed with ornamental trees and landscaping. The site slopes to the onsite storm
drainage conveyance system which drains to the east to 76h Avenue W. The project Res to the west of the
intersection of 76" Avenue W and 208'h Street SW. The site address is 20628 76h Avenue W. The
intersection of 76h Avenue and 208'h Street SW is signalized with the existing commercial driveway
(south entrance) to the site forming the west leg of the intersection. The site frontage on 70h Avenue W
is currently improved with an approximately 22' wide travel lane, curb, gutter and sidewalk. The
northernmost entrance to the site will be removed with the development of the site.
The site is located at a high point on 76h Avenue. The topography trends to the south and east toward
Hall Creek which fies east of SR99.
The on -site soils are Alderwood Urban Land Complex.
PROPOSED SITE CONDITIONS
The site will be developed for the construction of attached multi -family housing. Four separate buildings
are proposed with a common drive aisle and a hammerhead turnaround. Sanitary sewer and potable water
will be extended into the site from City of Lynnwood facilities located in 76th Avenue W. Stormwater
detention will be provided by two hydraulically connected stormwater detention vaults design in
accordance with Edmonds' Municipal Code requirements and guidelines found in the 1992 Department of
Ecology Stormwater Management Manual for the Puget Sound.Basin.
The project qualifies as redevelopment as defined by the Edmonds Municipal Code. EMC 18.03.060A
states that "any new development or redevelopment with more than 2,000 square feet of new impervious
surfacing shall be required to provide storm water quality controls." Permanent water quality measures
for stormwater runoff from pollution -generating impervious surfaces will be incorporated into the site
design with the provision of two Stormfilter filtration systems provided by Contech Stormwater Solutions
Inc.
EMC 18.30.060(l)(a) states that "all development sites less than one acre that discharge directly or
indirectly to a strewn shall be required to limit the peak rate of runoff to the predeveloped condition two-
year, 24-hour design storm, while maintaining the predevelopment condition peak runoff rate for the 10-
year, 24-hour and 100-year, 24-hour storms. The proposed stormwater vaults have been designed to
meet this standard. EMC 18.30.060(l) defines the predevelopment site conditions: the predevelopment
condition for all cases other than open water bodies shall be considered meadows or young second growth
forest. Second growth forest was utilized for this site. A summary of the Minimurn Requirements can be
found in Section 2 of this report.
FuU Drainage Report Page 3
Wiflowdate Townhornes May 2008
SECTION 1 - PROJECT OVERVIEW
RGUU I — VICMM M"
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IS
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SCALE- 1"=1000'
Futl Drainage Report Page 4
WiHowdale Townhornes May 2008
SECTION 2 - CONDITIONS & REQUIREMENTS
SECTTON 2 - CONDMONS AND REQUIREMMNTS SUMMARY
STORMWATER DETENTION: Two hydraulically connected underground detention vaults will
mitigate for increased in stortnwater runoff. These facilities will limit the developed flow rates to
50% of the predeveloped 2-year flow rate and win match the 10- and 100-year predeveloped flow
rates.
PRESERVATION OF NATURAL DRAINAGE SYSTEMS: The proposed point of discharge is
to the eidsting conveyance system located in 76th Avenue W. The site currently drains to this
system.
SOURCE CONTROL OF POLLUTION: Permanent - water quality measures have been
incorporated into the site design. Volume 4 Page 1-6 of the Ecology Manual states that source
control BMP's are not required for parking lots with less than 20 stalls. Residents of the proposed
development will park in garages.
iv. RUNOFF TREATMENT BMPS: Permanent water quality measures for stormwater runoff from
pollution -generating impervious surfaces will be incorporated into the site design with the
provision of two Stormfilter filtration systems provided by Contech Stormwater Solutions Inc.
V. WETLANDS: There are no critical areas on or adjacent to the site.
VI. WATER QUALITY SENSITIVE AREAS: Staff did not indicate at the preapplication meeting
for the project that the site lies within a water quality sensitive area.
vii. OFFSITE ANALYSIS AND MITIGATION: An offsite analysis is included in Section 3 of the
report.
vm. BASIN PLANNING: The applicant is not proposing to develop or utilize a specific basin plan.
Ix OPERATION AND MAINTENANCE: An Operations and Maintenance Manual is provided in
Section 6 of this report
X. FINANCIAL LIABILITY: Maintenance or performance bonds will be submitted prior to permit
issuance.
FuH Drainage Report Page 5
Willowdale Townhomes May 2008
SECTION 3 - OFFSITE ANALYSIS
SECTION 3 - OFTSITE ANALYSIS
UPSTREAM ANALYSIS
The site sits on a high point relative to adjacent properties. Single family residential homes to the west are
lower in elevation. The site is bordered to the north and south by apartment complexes that slope toward
the existing conveyance system located in 766 Avenue W. Given the site conditions and surrounding
topography upstream flows are nonexistent or negligible.
DOWNSTREAM ANALYSIS
Stormwater runoff from the site flows to the east to 76th Avenue W to the existing storm drainage
conveyance system located in the right of way. The site is currently developed and the onsite storm
drainage system consists of a series of catch basins and storm drainage pipes that convey runoff along the
south side of the site to a stonn drain manhole located east of the centerline of 76th Avenue W. At the
time of the field survey of the site the storm drain manhole was full of water and the outgoing pipe invert
was not identifiable. The area slopes down to the west along 208 1h Street SW, so it assumed that the
conveyance system located in 208'h Street SW is the downstream drainage course for the project. 208th
Street SW has a piped conveyance system that drains to the west toward Hall Creek to a point that is
greater than 1/4 mile downstream from the proposed point of discharge. There were no apparent signs of
scouring, flooding or sediment buildup in the downstream system. Given the level of detention proposed
and the assumption of a forested predevelopment land cover the downstream system should be adequate
to continue to receive runoff from the site.
Full Drainage Report Page 6
Willowdale Townhornes May 2008
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FIGURE 10 — SOELS
5 — Alderwood Urban Land Complex, 2-8. percent slopes
Source: NRCS — National Resources Conservation Service
Full Drainage Report Page 15
Willowdale Townhomes May 2008
SECTION 4 - FLOW CONTROL AND WATER QUALITY DESIGN
SECTION 4 - FLOW CONTROL AND WATER qUALITY FACILITY ANALYSIS AND DESIGN
SITE HYDROLOGY (PARTS A & B)
PART A - EXISTING SITE HYDROLOGY
The existmg site is developed. The predeveloped land cover was modeled using 2d growth forested and hydrologic
soil group C.
PART B - DEVELOPED SITE HYDROLOGY
The new proposed drainage system will collect surface runoff m a series of catch basins and carry water via
underground pipes to the onsite detention and water quality facility. The site area is 0.95 acres and the total of
proposed impervious surfacing is 0.75 acres, with the balance of the site in the developed condition devoted to
landscaping areas.
Precipitation Depths
6 mo = 1.0 1"
2 yr = 1.50"
10 yr = 2.40"
100 yr = 3.50"
Existing Event Summary:
BasinlD
Peak Q
(cfs)
E)dW%
0.02
EAsfiM
0.06
E)dsf�
0.13
Drainage Area: Existing
Hyd Method: SBUH Hyd
Peak Factor: 494.00
Storm Dar: 24.00 hrs
Area
Pervious 0.9500 ac
Impervious 0.0000 ac
Total 0.9500 ac
Supportin Data:
Pervious CN Data:
2nd Growth Forested
Pervious TC Data:
Flow type: Description:
Sheet None Entered
Full Dminage Report
Willowdale Townhomes
Peak T
Peak Vol
Area
Method
Raintype
Event
(hrs)
(ac-ft)
ac
/Loss
17.00
0.0249
0.95
SBUIVSCS
TYPEIA
2 yr
10.00
0.0690
0.95
SBUIVSCS
TYPEIA
10 yr
9.17
0.1352
0.95
-SBUIVSCS
TYPEIA
100 yr
Loss Method: SCS CN Number
SCS Abs:
0.20
Intv-.
10.00 min
CN
TC
81.00
2.19 hrs
0.00
0.00 hrs
81.00
0.9500 ac
Ungth:
Slope: Coeff- Travel Time
300.00 ft
0.50% 0.4000 131.51 min
Page 16
May 2008
SECTION 4 - FLOW CONTROL AND WATER QUALITY DESIGN
Developed Event Summary:
BasinID Peak Q Peak T
Peak Vol Area
Method
Raintype Event
(cfs) (hrs)
(ac-ft) ac
/Loss
Developed 0.26 8.00
0.0882 0.95
SBUIVSCS
TYPEIA 2 yT
Developed 0.45 8.00
0.1551 0.95
SBUMSCS
TYPEIA 10 yr
Developed 0.70 8.00
0.2391 0.95
SBUWSCS
r[PEIA 100 yr
Drainage Area: Developed
Hyd Method: SBUHHyd
Loss Method: SCS CN Number
Peak Factor: 484.00
SCS Abs: 0.20
Storm Dur: 24.00 hrs
Intv: 10.00 min
Area CN
TC
Pervious 0.2000 ac 86.00
0.08 hrs
Impervious 0.7500 ac 98.00
0.08 hrs
Total 0.9500 ac
Supporting Data:
Pervious CN Data:
Pervious 86.00
0.2000 ac
Impervious CN Data:
Impervious 98.00
0.7500 ac
Pervious TC Data:
Flow t3rpe: Description:
Length: Slope:
Coeff.
Travel Time
Fixed None Entered
0.00 ft 0. 0 Wo
5.0000
5.00 min
Impervious TC Data:
Flow tyrpe: Description:
Length: Slope:
Coeff-
Travel Time
Fixed None Entered
0.00 ft 0.00%
5.0000
5.00 min
Control Structure ID: D-001 - Multiple Orifice Structure
Descrip: Multiple Orifice
Start El Max El Increment
432.6000 ft 438.0000 ft. 010
N�1-
Orif Coeff 0.62
to 1P oe
I kt 5
Bottom El: 430.60 ft- of, f+c�
Lowest Diam: 0.4102 in
G'J(
Diam: 1.4063 in
2nd to 3rd: 0.8wo ft - L\3 6
Diam: 1.5234 in
Node ID: Vault
Desc:
Manhole structure
Start El:
432.6000 ft
Max El:
438.0000 ft
Contrib Basin:
Contrib Hyd:
Stage
Area Volume Volume
432.60
935.00 0.00 Cf 0.0000 acft
438.00,
935.00 5049.00 cf 0. 1159 acft 5,454-
Full Drainage Report Page 17
Willowdale Townhomes May 2008
SECTION 4 - FLOW CONTROL AND WATER QUALITY DESIGN
Hydrograph 111): out2
Area: 0.9500 ac Hyd Int 10.00 min Base Flow:
Peak Flow: 0.0086 cfs Peak Time: 24.17 hrs Hyd Vol: 0.0113 acft
Hydrograph ED: out10
Area: 0.9500 ac Hyd Int: 10.00 min Base Flow:
Peak Flow: 0.0575 ds Peak Time: 18.17 hrs Hyd Vol: 0.0780 acft
Hydrograph ED: out100
Area: 0.9500 ac Hyd Int: 10.00 min Base Flow:
Peak Flow: 0. 1296 cfs Peak Time: 11.67 hrs Hyd Vol: 0. 1611 adt
RLPCOMFUTE IRLPI SUMMARY
/A 66442 yr Match Q: 0.0091 cfs Peak Out Q: 0.0086 cfs - Peak Stg: 436.19 ft - Active Vol: 3352-38 cf
10 yr Match Q: 0.0569 cfs Peak Out Q: 0.0575 cfs - Peak Stg: 436.99 ft - Active Vol: 4102.30 cf
100 yr Match Q: 0.1288 cfs Peak Out Q: 0.1296 cfs - Peak Stgi�, "7-70 - Active Vol: 0.1096 acft
-, MqV—< +,PCA 1q( F'S� to. I
The site is 80% impervious, therefore a factor of safety of 40% was applied to the required volume.
The modeled vault area under "Node ED: Vault" is 935 sf.
935 sf * 1.4 = 1,309 sf.
The total area provided in the vaults is 1,310 sf
Full Drainage Report Page 18
Willowdale Townhomes May 2008
t I I
SECTION 4 - FLOW CONTROL AND WATER QUALITY DESIGN
WATER QUALITY
Stormfilter catch basins firorn Contech Stormwater Solutions will provide water quality for pollution generating
impervious surfaces. Runoff from rooftops will bypass the water quality devices and dram directly to the
conveyance system or detention vaults.
CB 4 Event Summary:
BasinlD Peak Q
(cfs)
CB 4 0.04
Drainage Area: CB 4
Hyd Method: SBUH Hyd
Peak Factor: 484.00
Storm Dur. 24.00 hrs
Area
Impervious 0. 1800 ac
Total 0. 1800 ac
Supporting Data:
Impervious CN Data:
None Entered
Impervious TC Data:
Flow tAx: Description:
Fixed None Entered
CB 5 Event Summary:
Basin1D Peak Q
(cfs)
CB 5 0.01
Drainage -Area: CB 5
Hyd Method: SBUH Hyd
Peak Factor: 484.00
Storm Dur. 24.00 hrs
Area
Impervious 0.0400 ac
Total 0.0400 ac
Supporting Data:
Impervious CN Data -
None Entered
Impervious TC Data:
Flow type: Description:
Fixed None Entered
Full Drainage Report
Willowdale Townhomes
Peak T
(hrs)
8.00
CN
98.00
98.00
Peak T
(hrs)
8.00
CN
98.00
98.00
Peak Vol , Area Method Rainqrpe Event
(ac-ft) ac /Loss
0.0120 0.18 SBUIVSCS TYPEIA 6mo
Loss Method: SCS CN Number
SCS Abs: 0.20
Intv: 10.00 min
TC
0.08 hrs
0. 1800 ac
Length:
S lope:
0.00 ft
0.000/0
Peak Vol Area
(ac-ft) ac
0.0027 0.04
Coeff. Travel Time
5.0000 5.00 min
Method Raintype Event
/Loss
SBUIVSCS TYPEIA 6mo
Loss Method: SCS CN Number
SCS Abs: 0.20
Intv: 10.00 min
TC
0.08 hrs
0.0400 ac
Length: Slope: Coeff. Travel Time
0.00 ft 0.000/0 5.0000 5.00 min
0
Page 19
May 2008
SECTION 4 - FLOW CONTROL AND WATER QUALITY DESIGN
^.1A&UVqefhW
V%Omi��
Z���U=�NSRC.
PrWa� by Kaftyu Timnasm an Apdf IR, 2M
Size and Cost Estimate
Willowdale Townhomes — Stormwater Treatinent System
EdInorvda. WA
Informirtion providled:
0 Structure ID =
CS 4 CO 5
a Total Area (acre)
0-18 0.04
0 Percent Impervioto
100 100
* Water Cluality Flow, WOF (c1s)
0.04 0.01
0 Peak Flow, 0100 (ds)
0-14 0.03
Assumptions:
• Media = ZPG cartridges
• Per Cartridge flow nite - 15 gprn
Drop requked from RIM to outlet = 2.3'minimum
Presiding agency = City of Edmonds
Size and cost estimates:
The Skm*-dW is a flow4med syskM and is sized by calculating the water quality Raw rate associated
wilh the design storm The water quardy flow nde was calculated by 1he design engneer using the SBLJH nuffimid
arA prvAded to CONTECH Slormwater Solutions.
Structure Water Approximate No. Of Estimated
11D Quardy Depth Cartridges system size Cost
Flow
CB4 0.04 2.3! 2 Catchbasin $9,700
CB 5 0.01 2-T I Catchbasin $5500
The esftaleid costs are for complete systems delivered to the job sile. The contractor is responsbie for seffing the
StormFitter system and all external pkffnbing.
C2006 CXX7ECH skwmwaw salukm
mftrufaltmom
IM21-B NE AkWWay. PCMMdCR VM0
Tog-ftecaW.SMAW FacO00-M1.1271
par 1 or I
TS-FUU
FuH Drainage Report Page 20
Willowdale Townhornes May 2008
SECTION 4 - FLOW CONTROL AND WATER QUALITY DESIGN
WATER OUALITY BASIN AREAS
Full Drainage Report Page 21
Willowdale Townhomes May 2008
I
A PORTION OF THE SE 1/4 OF SEC 19, T27N, R4E, WIVI
APPLIC-ANTAWMER
MURPHY BUILDING COMPANY
2021d STREET SW
L6203
,,KNNOOK). - GTQ. 160,51;
425,775.33W
ATTENTION: 800 MURPHY
0 10 ZD 40
Ll
-W
a
STORM DRAINAGE CONSTRUCTION NOTES
(D REM(K TASTING r STOW PIPE FROM EvsTm TYPE i CA" BASIN. STRUCTURE wAs FULL OF
SLIRVEX CONNECT MEW 12' STORM PIPE To STRUCIUV- SEE
ON. V`B`v D`SONG alval,
(D cmsmc r STORM PIPE To BE REMOVED AND REPLACED WIN NEW 12' SUM PIPE
USONG CATCH GAIN TO BE RDWOMED AND REPLACED WIN NEW TYPE I CATCH BASIN. RECONNECT
STORM PIPE N FROM slam TD NEW STRUCTURE
CATCH BASINS 4 AND 5 ARE STORMITILTER STRUCTURES By CONTECH STOMM70 MUD SEE
SHEET CII FOR DETAILS OF THESE STRICTURE& TONS.
C"S`NUCT NEW CONTROL STRUCTURE. SEE DETAIL ON 9*]ET CICL
CDVSERUCT DETENTION VAULT AT TW LOCAUGHS. SEE SHEET C12 FOR GENERAL INFORMATION. SEE
SMXnJK GRA"NGS FOR ALL CONSTRUCTION DETAILS AND INFORMATION. 10' BUILDING SMACK TO
VAULT IS REQUIRED.
INSTALL YAM DRAM W LON PONT OF GILAMa CONNECT YAM GRAIN TO DOM SPOuT GRAIN
SFSTENL
INSTALL 6- PCV PrE TO "THIN T OF THE SAMING FOUNDATION FOR FOOTING AND ROOF DRAW
CONNECTION TO STOW GRAIN S"Ma,
EXISTING CATCH BASIN TO 13E REPLACED
c- 5- re% I r� - !,-
t�IXE-D I (A%A. ALLMj66)
ROAD CONSTRUCTION NOTES
REPLACE Exisnmc Om*vAY NTH Ww ojm curmn AND simaAm sA*GUT EKIsr am CUTTER AND
SIDEWALK AND PA%EMEMT BEGINNING AT STA 10176 It LT AND ENDING AT STA II,ZS ITT LT. REMOVE
EXISTING PAVEMENT SECTION * CURB. DIM AND SOCwALx BETNEEN moo OF MAY AND SAWOUT LINES,
INSTALL NEW CURB. OMER Aid) SIDEMALK PER STANDARDS AM SPECrICATION OF THE CITY OF EDMONDS
ADASST ANY UlftM so= COVERS r OR
PA=
AND PAVEMENT AT UNITS OF NEW WE r = TO NEW FINISH (MAX MATCH EXIST SDE.ALK
SPEOFICAIKIMS OF THE CITY OF EDMML SEE STANDARD DE SHAUL BE REPLACED PER THE STANDARDS Am
TAGS ON 94ET co
REPLACE DffSnNG ORVEVAY NTH NEW NXII-FAWy ENTLANCE. SAWWT OWING OM OIT70 AND
SIDEWLX AND PAVEMENT BEGINNING AT STA 9+46 IV LF AND ENDING AT STA 10.24 Ur LT. REMOVE
CXS70C PAVEMENT SEV", = ZIT AND SOEWALK BETWEEN RIGHT OF My AND SAWLIT UNES
MST. . .. PER AN AND SPEOFICATIONS OF CITY OF MWOMO AENUST My UTILITY
6=S. COVERS AND on Los IN TO . --X . CATCHS' TIES SOUID
COVERS TO NEW FINISH 2RADE =1 A= MATON EXIST SIDEVALK AND PBASM GRA Cot
MIRK. PAVEMENT SE BE REPLACED PER AVEWNT AT LIMITS OF NEW
cno" g"LL ON SHEET GIL THE STANDARDS AND WEOFICATIOMS OF THE CITY OF
EDMOND& SEE STANDARD DETAILS
am GUTTER AND SWEWALX BETWEEN STA 10424 NO STA 10+76 TO AEMAH.
SAIKWT EXISTING PAVEMENT TOarIDE LOCATION Or THE SA.WT N,
ON THE PLAN IS A`M`G",E .0=7UTY CONSTRUCTION. go
NECESSARY MOTH TO PERFORM THE UTILITY 9=3,Zt!A=,T"` SA�QLDCAno.-.TQ =MOWPEMR TTWHEE
SECTION
STANDARDS AND SPECIFICATIONS OF THE OTY OF EDMONDS. SEE STANDARD DETAILS ON SHEET C9.
NEW AC PAVEMENT SEE r6W� ORT�EWAV SECTIONS ON 94V CIL
INSTALL NEW OM AT LOCATION SHOWIN ON THE PLAN SEE EURB DETAIL ON SHEE I CIL
C04TMXT A" CONCRETE SIDEWALK AM GARAGE ACGESS AS �Ha,, ON THE p,,V, SEE HEj CS FOR
SIDEWALK SECTION I
CONSTRUCT CONCRETE TRASH ENCLOSURE PAD. SEE ARCHITECTS PLAN FOR DETAILS.
MISTALL -NO PARKING-FIRIE LAW 90H
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SHEET
TWO BUSINESS DAYS
BEFORE
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APPROVED FOR CONSTRUCTION
FIG 1 1
1-800-424,5555
P,
SECTION 5 - TESC SUMMARY
SECTION 5 — TESC ANALYSIS AND DESIGN
Erosion control measures will include silt fences, catch basin inlet protection and ground cover practices. Silt fences
will be placed at the downstream edges of all disturbed areas. The plans include details and notes for the use and
maintenance of catch basin protection and ground cover practices. Ile wet vaults are to be utilized as sediment
ponds during construction. The vaults shall be cleaned and all sediment removed once the site has been stabilized.
Full Dminage Report
Wfllowdale Townhomes
Page 23
May 2008
SECTION 6 - MAINTENANCE AND OPERATIONS MANUAL
SECTION 6 — MAINTENANCE AND OPERATIONS MANUAL
14o. 3 - ClosW Debrtkm Sysimm (Tmdm1V8ufts)
11901mu"m
od"t
conmem Whom ad " unce Is "me"
lf=wlt
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Who 111141mmunie Is
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funcklonks
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ftaxWelad madiffed &p& a, - a m lo '10%
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Is
fewirs enalf-wiry analysis b
OIL*
determine *ucbxW obblilly).
T= Bed OiA
=ypwt dtw*4t Is bent out of!�=
am 10% of design shape
TartWplp=or
mphmdto gm
r:V by engineer b d%tKmkw sbuchmal
a ".
V" 61ruchre
includes C40*5 In
Wait A � ft
C� wiibw dun 124nch and WL
evidencedsollparbAss=
shmilBeftol4i to crwficlm� or
V=suk =,Id
c'.
t)cwz
spwnmftu ard to
Dwn2p to Fmm
wsdkr Top
I w - Pofwnnai
MM%d mAlanctelructusk
atucksally wLmd.
Cracks wUw #mb24rch at the )*# of any
No cnmko mom lhan
InislJoutist plpo or any evidenoe d soill
particles entering dw mg 1hrmo lbe,
1A14nehimidedthe
johofthewdia"
01pe.
Manhole
Cover moll irk Flow
Cover Is n*OV or only pal In pbm.
Maig Is closed.
Any open rnsMole recitsires =norm&.
Looft Machanlarn
Not WbrkbV
Medwim cannot be opmW by am
maintenance pawn W& ppoWtxdL Bob
Mechanism opens
w1h peoper fools.
kft fmme have lew Um 102 inch of Us
(may not apply to sellf4oddrV lkb�
Coverall5mallo
Onemalrdenarmpermcow rernoveld
Cover cari be
Remove
after applying nond Wft pressim. Inlent
is to keep cover *am seaft off access, b
mobdonanoe
rernaved and
==byaw
penwm
Ladder Runp Uneeft
Ladder Is uneds due io "Jeeing rungs,
Ladder meals design
r4wWmw4 not mmff* al1sched lo
etucwm UFA rJ4 or rm mr.1 m
standards. Allows
mainlenence person
I aefs aeons,
Cabch Bamins
See -Calch BmW
! (N- 6)
See -Wch Basirie p4m 6).
See"Calich BadW
1 (NO. 6). 1
4-34 V*bn30 V— RumW Tmatownt BWS Atwst2001
FuH Drainage Report Page 24
Willowdale Townhomes May 2008
SECTION 6 - MAINTENANCE AND OPERATIONS MANUAL
No. 4 - Contol Sbucknufflow ResMdkw
makdernma
D~
CwKtdm whWillsivilenswe Is 11barle
RwAftbipected
Can
Ifootle'
Gerwal
Trash wd Dv&b
OncludesSedimmq
Materialem-sed 21McfeuMdop1horl
affirepleba,
Ca"evuctwe
office Is not blocked
All Wah and ddrb
renvad
Strucbral Dersage
Structure Is nct seawrely attedwed to
malftlevalt.
=t.—.dffd.YW
outist pips.
Structure k not in uright: position (dow up
to iox ftm pk1mb
Structure In ouffed
Poeffion.
Connections to outlet pips am not watertight
Connections to outlet
andahoweignotnuL
wdw tight
or
es designed
-otw than designed holso--inthe
Giructum has no
holes ottw Itten
designed holes.
Clesnout Gate
Denvaged or Missing
rAesnout gets Is nc*vA*er%M or Is raleft.
Ode Is welartight
and worts as
designed
"a cannot be moved up and dow. by ons
makilenance, person.
Gate movies up aid
dmea*wdle
W41010110tit,
Chdy*od lw*g lo gate Is ntnbV or
damaged.
—
Chain Is In place and
waft as designed
Gate is rusled over GM of be surface anes.
Gate Is repaired or
repaced to amok
do@W standa. 9.
Office Plate
Damaged or Wasing
Contro1jdavics Is not worldnil clue to
m1asko out d place. or bent =plats.
Plate Is In piece aid
waft as designed.
Obstuctions
Any bash, dabda. sedhvh* or vegetation
bwft the pids.
plate Is *99 of all
absbuctlons, and
waft as designed
overflow Pip
CH)skuc&M
kinytrssh cw dab& ig (or having #w
of blockkig) He over5w p1pe.
P - "fr—d
obsinictions :
worb as deabned_
Manhole
see 'Cloeled
Datentionsydaw
(No. 3).
I
See-Cloasd Detention SydwW ft. 3�
8""Closed
Detention systerw
(No. 4
Catch Basin
see TA" Beew
899Cddh Badne 04% 15).
8604cetch
(No. 5).
1 (No. 6).
ALW&f 2M Vokn3s V- Rulaff Tmaowd SWa 4-35
Full Dminage Report Page 25
WHlowdale Townhomes May 2008
SECTION 6 - MAINTENANCE AND OPERATIONS MANUAL
NO. 5 - catch Basim
maingermwe
campamit
kfect
coadmamis wAn mm b awd"
Rqob eqmmbd V11h an
Is
polloamed
General
Tmah &
Debris
Trash or dab which Is localed Inff
Inlartultheadchlbamin r is
=k= = W-f= by
No Trash or debris
=Inbmtof
=lbb, on wake
"d-Z., ==60
Notradhorde"Inihe
C" bask
Ihe bothwn of basin In f we of too lowed
rinb cr wA d lhe busin. but In nD cam
w than a nkkmn d mix inches clearance
tm to dWxb affftwe lb the invert d to
bwestp�w.
Trash cw dalm In any Inlet or wM pi"
bkKUrg nore then in of Its heigK
k" ard cAist pip" tes
d tesh or debds.
Wool w*nmb or vegsbAbn thot cmN
:==Wit could cause wn Ints
a= (so. mww').
NpcbWm*mbcr
VwQ= tv*mlh
the
Sedirnent
E"fard (in the basin) that mweedo GD
C"Z *" fAd j=ared
obdlornld b.'.IMn = b..rm
No sedirvent In the catch
bmln
=k6ocretAof thebavin.but In nocese
thmn a minirmn d 6 bw*m clearance
ftm the secArnent suface In the Invert d the
plipe.
ftuchre
Darr '
tmkb9bw#m2 9*twe
= u uAder ftn 114 Inch
Top skb is *w of hWm
andaracks.
F=qnd0f.
Top Slab
(Intent Is tD romice wirs no material Is nxwkq
kib basin).
Aw, nuitsittirglushon Le..
se 61"IiIn'l =of the ftame
ftm' it, lop =F= Uwt "M*
allached
Frano Is skIM lush on
ths rhw ri or dab
No "7=.
Fractures or
Gracks in
Basin VVaW
Batiorn
malrosciarce person)Abse that shmAgre Is
unawnd.
Ilimin replaced or repalred
to desigh standards.
Grout fild tm separuAsd or amAnd wider
lhan *2 Inch and kmW than I fad at to
Joint d ww kwx"=or any evidence d
t:=&Aes ent.1rig b..W 1hrough
Pkm is vmmuted and
secure at basin wall.
Betlerment/
MbalWvmnt
I blurs of basin 'a solely.
&mckm. or damign problem.
Basin reipleced or repaired
locimeli;nslandaRls.
Voijotallon
VWAdJon growing scmm and bbddrg nwm
lhan 10% of the bmin opw*V.
No vagdAm 1, lacki
apoftlobash
sk inches apart.
Ho vagaballon ar rod
wow& wesed
I I
+36 Vokme V- Rwmff Traaftmg BWs AtWaf2Wl
Full Dminage Report Page 26
Wdlowdale Townho.mes May 2008
SECTION 6 - MAINTENANCE AND OPERATIONS MANUAL
No. 15 - Catch Ra"
"'I
MORO
CaV11111010 WOM 1"' 1 Is Mlopiled
Re.saft Vilhon
Cawdowlt
"Awnsw
Contamination
and Polution
See -Daterillon PWKW (14o. 11
No P*ADD present.
Catch Bain
env
Cover Not In
Piece
pwd* In 0-9.
reqLdres maintenance.
Cohch booln cover In
Loc
U.fthz.
HotVftking
Mechenlemcorm becpmWbyons
wth proper We. Bolts
==P —k-uthan1f2inchafthread.
MedKionlern operawilh
properlocle.
Cover DNcL#tl
to Rofwve
One Od
or,9rw=MwM9"l4,"§tA ==Dva
Cover can be removed by
onsmaktortanceperson,
rrsk "keep cover tom wwWV off
4
Ladder
Ladder Runp
UrMA
Ladder le unsda due tD misaft rurp, not
ftcursl� altachad to basin wall.
miaelignment nnk cracks, or sharp ociges.
mWnbww= person ode
GlooMIS,
mew Gcolloo
(NApplicable)
Grote opening
Unamb
Grote wilh opening wider dw 7ya klctL
Grote openlro meow
doeW aMndwdL
Troshad
Debris
Trash anddebris that Is blocling more than
20% clWate stWow hathV Cape*.
Gratellraeoltroshant!
debris.
Damaged or
Missing.
Grote missing or broken mernber(s) dthe
grabs.
Grote Is In place wd
meets design sharmlards.
No. 6 — Oak;& BarrWm leq.. Tfash Fiacks)
makdorlance
Cemponents,
Deflect
CowdliDn VAm Molnumme to
Moubd
flosullialExinctodVaen
111161rilenance le ftfmn
General
Trash oW
Debris
Trash or debris Owd Is pkqft m"
VM 20% d 'he qM*W In OW barrier,
Border cbwed to doe%;n fbw
MPO*L
histal
D
M
Bars.
Bers, we bad otA of shape more than 3
Inches,
Bers
faen =uft no bande moo
Baro we mleakV or entire border
misakV.
Sam In plow socorft to dedgm
Sam we bow and met Is owinkV SD%
deterioration to any put of barrier.
Barrier roplaoscl or repoW to
dmWsbndw&
lr*kO" jDabriebwWraiaftornotewwdio
Pipe
Pil-
Barrier " attached to pips,
August 200 Vokna V— Runoff TreaLmd BWs 4-37
Full Drainage Report Page 27
WiHowdalc Townhomes May 2008
SECTION 6 — MAINTENANCE AND OPERATIONS MANUAL
No. 12—Wstwoults
maintenance
Dated.
Candwomi room
Refift e4mclad When
Is 14sadad
cwmw
I
TmdA)ehb I
Trash ad debris amwAdated
Ranove tush and debris *am vauL
AcumniAmilon
-vwA plpe or kisub"
%:=� and fm-
860flent
AccurriLdation in
VWA
Sedhient mommyAstion InvuLd
I mi'm tie
sodkeent zone pkm =.
Ramovesodkw9froravasA
0—ged P4-s
-
" ng d—
' Wlbrdein mdflg;2w
pipe rap" -W- reptsoad
Acceas Cow
DamagedNot
Wodft
Cow cannot be opened or
renaved, eapeddy by one
pwWm
-
Rpe repaW Or MpbNd to PMPW
Worth specmowbm.
Ventistion
Vardadon am hocked or
pkWed.
BI I I nmiwkd fernoved or clam
A speciled %
thavalAsurface
vermation to, the :r=rG"-m-
dsmW WeMoations),
Vault Sbuctwe
02 -
lmk=l. Cracks
In Vible Butiorn.
MahMrwno&qnqxmWn
=mklwndtr=H!yrnd.
Vault replaced or repeft made w
that vm*=d" 'n mmesuom
Gind b w'und!p
end"Frerne
& pD 3bb
Cracks wkbr than Mnch at
the Oki d an
j kdetbitlet pipe
or Addwm
tsdm ftm* cludaL
Vm* repaked so tat no cracks wtbt
wider than 194nch at theich ofthe
Inbumm p%w.
BaRles
=' *,:a - d
falkim '-'dft,*.d by
Bd§n nnm*W or replaced W
maintevemefinapectlon staff.
Aocees
Downege
Lackbr Is am, or
deterbruled, not funcd:ft
pmpaft. not ated'Ad
Ladder nm*wed or nmmdred to,
Ord Is b use as
Inspedon personnel
s1ruchmewall, niming rwg%
has cracks andfor rr&vloved
Conffned apace wwrdng sign
I mtmk4
R sign warnkV of confined
L or
id
1: 1 icurnpkevdth
10 stwKiffids. I
ALW8f 20M Vokme V— Rumff Trea0ma BWs 4-0
Fuff Dminage Report Page 28
Wiflowdale Townhomes May 2008
SECTION 6 — MAINTENANCE AND OPERATIONS MANUAL
Na 115 —$kwrAl0ww J*dccmpmtfAmj
KA*napw
n 1p P-
Candifta M llllslrd�le
VAM
Needed
Mdafteums Rellomeed
BelowChwid
Sedirnerd
I
&Wkmfd depth oweecia 02&kwhas.
W depoallsviNch
VWA
Accurriuldon on
Vculd bve&l pammmiftof
owampodinix"
Sedirnert
Sedirrisit deA aweeds 64ndws In W
Nbsecilmentclepceft b vaul
Aoxxvvilallon In
Vbd
diwnber.
baft. of**tdwm*9r.
Tfastmebris
Trash wW debris mmmvMed on
Thwh wid debrism flarn
Accurnulellon
cwgod Ober bed
Ow owqxwk filer bed
Sedirrterd in
Ovin
U,====--
Sedimerd wid MxW rernoved.
Possicioarl..
outs
Dwwged Pipes
An
w Vsd or
a y, Pat adf =ss 47
eadernerrL
Pipe repaired mitr replaced
Access Cow
DernegeclMd
worl"
Cover carout be opened; or* person
muftuab"= of
COW.
Cow
V=kh ;==W
rq*wod
VmA Skudure
Craft vddw ton Ifl4nch or evidenm
VaullreFlecedorrepalreffmcle
Includes Owls
of soll particles artwirm #m *ud"
voltudi"nooladeeW
Irt VftK BaWm
Da"
R=ewtw
ft umiak or
ll�m
d&Am*wU*
is wwumkqjf
Top Sw
dourd
Craft wider than In4rich at Ow
wW Irdalkabat opeoreviclerwe r1lof
so ftv* ro ciacks
=td=n 194rah ak &e
peftles edwbV Oroto #w cracks,
)**dew wwo"pips.
Beffies
scor, ing,craciftVA019,
wxft laxpa
ffift sigm of .- as
delem*wd by
Bad%* ed or replawd tD
peraorL
Awass I
Dmaged
Ladder Is corroded or delm kx not
ftcow = not sacurely
athdmdftto aut n*mbV nxV%
Ladder replaced or repaired aid
nwela apecificatiom wW Is
safe ID use as clAwrdrod by
r A 1 -A WW rnlealkFwd
kqwdbn personnel.
BelowwGround
CartridgeType
Curipost Medis
Omudw" of mtw
flalm bnger tw i
Medle cer0ilp, replaced
Shad CkmOM
RovisdDricitprop"erftrAw
I rw*-.
"W cerbites repilmed.
I I
August 201 VbAww V— Runcff Treatima SWa 4-47
Full Drainage Report Page 29
Wiflowdale Townhomes May 2008
APPENDIX A - CONVEYANCE CALCULATIONS
APPENDIX A — CONVEYANCE CALCULATIONS
FuH Drainage Report Page 30
WWowdale Townhomes May 2008
APPENDIX A - CONVEYANCE CALCULATIONS
APPENDIX A — CONVEYANCE CALCULATIONS
cabIefion Caldynerd Summary
CoMwit Swajary!' Node Summary
Inlet Summary
Label
Element Type
Subnetwork
Outfall
Flow (Total
Surface)
(ftl1s)
Flow (Total
out)
(ftl1s)
Elevation
(Ground)
(f Q
Elevation
(Invest)
(ft)
Energy Grade
Una (In)
(ft)
Energy Grade
Line (Ott)
(ft)
C8 3 (STORM)
co 2 (STORM)
CS 4 (STORM)
CO 5 (STORM)
Ex..i5T CB (5...
1C.B.1 (STORM)
Manhole
Manhole
Manhole
Manhole
Manhole
Manhole
OF-2
OF-3
OF-2
OF-3
OF-3.
OF -3
0.31
0.31
0.42.
0.09
0.0.0
0.00
0.72
0.34
0.42
0.09
0.00
000
440.32
440.28
440.13.
438.87
.413.7.48
436 97
430.27
428.42
435.08
434.20
.43.0.110
430.23
437.71
437.70
437.71
-437.70
4.3.6.97
436.97
437.71
437.70
437.71
437.70
.4.36..97.
436.97
FuH Drainage Report Page 30
Willowdale Townhomes May 2008
APPENDIX A - CONVEYANCE CALCULATIONS
Worksheet for 12-inch Pipe
Project Description
Friction Method
Solve For
Input Data
Roughness Coefficient
Channel Slope
Normal Depth
Diameter
Discharge
Results
Discharge
Normal Depth
Flow Area
Wetted Perimeter
Topwift
Critical Depth
Percent Full
Critical Slope
Velocity
Velo* Head
Specific Energy
Froude Number
Ma)dmum Discharge
Discharge Full
Slope Full
Flow Type
GVF Input Data
Downstream Depth
Length
Number Of Steps
GVF Output Data
Upstream Depth
Profile Description
Profile Headloss
Average End Depth Over Rise
Normal Depth Over Rise
Manning Formula
Full Flow Capacity
SubCribcal
0.012
0.00500 fl/ft
1.00 ft
1.00 It
2.73 fF/s <- <x.,..-
Z73 f V/s
1.00 It
0.79 ft2
3.14 ft
0.00 ft
0.71 ft
100.0 %
0.00692 ft/ft
3.47 ft/s
0.19 ft
1.19 ft
0.00
2.94 f ?IS
2.73 fV/s
0.00500 ft/ft
0.00 ft
0.00 it
0
0.00 ft
0.00 ft
0.00 %
100.00 %
Bentley Systems, Inc. Haestad Methods Solution Center
Bentley FlowMaster 108.01.071.001
413012008 5:U:39 PM 27 Slemons Company Drive Suite 200 W Watertown, CT 06796 USA +1-203-7WI666 Page I of 2
FuR Drainage Report
Willowdale Townhomes
Page 31
May 2008
APPENDIX A - CONVEYANCE CALCULATIONS
Worksheet for 18-inch Pipe
Project Description
Friction Method Manning Formula
Solve For Full Flow Capacity
Input Data
Roughness Coeffident 0.012
Channel Slope 0.00400 ft1ft
Normal Depth 1.50 ft
Diameter 1.50 ft
Discharge 7.20 ftl/s <- CAP
Results
Discharge
7.20
fe/s
Normal Depth
1.50
ft
Flow Area
1.77
ft2
Wetted Perimeter
4.71
It
Top Width
0.00
ft
Critical Depth
1.04
ft
Percent Full
100.0
%
Critical Slope
0.00587
JIM
Velocity
4.07
ft/s
Velocity Head
0.26
ft
Specific Energy
1.76
It
Froude Number
0.00
Maidmum Discharge
7.74
ftl/s
Discharge Full
7.20
fP/s
Slope Full
0.00400
Wit
Flow Type SubCritical
GVF Input Data
Downstream Depth
0.00
ft
Length
0.00
ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.00
I't
Profile Description
Profile Headloss
0.00
ft
Average End Depth Over Rise
0.00
%
Normal Depth Over Rise
100.00
%
Bentley Systems, Inc. Haestad Methods Solution Center
Bentley FlowMaster 108.01.071.001
440CM 6:36:32 PM 27 Slernons Company Drive Suite 200 W Watertown, CT 0679S USA +1-203-756-IM Page I of 2
Full Dminage Report Page 32
WWowdale Townhomes May 2008
ON
Q . I
Q
EXISTING FENCE TO REMAIN,'
WIN
QUANTITY SYMBOL
10
3
5
4
12
28
9
PLANT KEY
NAME
TREES
EXISTING TREE TO REMAIN
PSUEDOTSUGA MENZIESII/DOUGLAS FIR
CUPRESSOCYPARIS LEYLANDII/LEYLANDI CYPRESS
JIS CALLERYANA 'CAPITAL'/CAPITAL PEAR
+ CERCIDIPHYLLUM JAPONICUM V. MAGNIFICUM
THUJA OCCIDENTALIS 'PYRAMIDALIS'/PYRAMIDALIS
0 PRUNUS HILLIERI 'SPIRE'/ SPIRE CHERRY
SHRUBS
SIZE/COMMENTS
6' HT./ B & B
6' HT./ B & B
1 1/2" CAL. B & B
1 1/2 " CAL. B & B
4 FT. H T
7-8 FT. HT. B&B
52
(D
RHODODENDRON SP./SMALL SCALE EVERGREEN RH ODODEN DRON /AZALEA SPECIES
1 GAL.
62
RHODODENDRON SP./LARGE SCALE EVERGREEN RHODODENDRON SPECIES
18-24" SPREAD
45
0
HEBE CHATHAMICA/HEBE LOW SHRUB OR GROUNDCOVER
1 GAL.
17
RHODODENDRONS AND OTHER EXISTING MATURE SHRUBS TO BE RELOCTE D ON SITE
AS SHOWN.
EXIST. BLDG.
EXIST. BLDG,
A P, ON BY PLANNING
0�b 6f
SEC. 191 - TWN. 27 RGE. 4
PLANTING NOTES
1. THESE NOTES ARE PROVIDED TO CLARIFY SCOPE OF WORK FOR LANDSCAPE
CONTRACTOR.
2. CONTRACTOR SHALL BE RESPONSIBLE FOR FAMILIARIZING HIMSELF NTH
ALL OTHER SITE IMPROVEMENTS PRIOR TO STARTING LANDSCAPE WORK.
3. CONTRACTOR SHALL NOTIFY UTILITY LOCATORS PRIOR TO ANY EXCAVATION.
CONTRACTOR SHALL USE CAUT10N WHILE EXCAVATING TO AVOID DISTURBING
ANY EXISTING UNDERGROUND UTILITIES. IF ACTIVE UTILITIES ARE
ENCOUNTERED, CONTRACTOR IS TO PROMPTLY ADVISE GENERAL CONTRACTOR
AND OWNER.
4. CONTRACTOR SHALL MAINTAIN AND, IF NECESSARY, WATER PLANT MATERIAL
UNTIL OWNER'S FINAL ACCEPTANCE IS RECEIVED IN WRITING.
5. CONTRACTOR SHALL BE RESPONSIBLE FOR PROVIDING THE QUANTITY OF
PLANTS THAT ARE REPRESENTED BY SYMBOLS ON THE DRAWING.
6. TOPSOIL REQUIREMENTS TO BE DETERMINED PRIOR TO CONSTRUCTION.
7. PROVIDE 2" DEPTH OF MEDIUM FINE BARK AS MULCH WITHIN PLANTING AREA.
B. ALL PLANT MATERIAL SHALL BE FERTILIZED. USE 4-2-2 AT RATES PER
MANUFACTURER'S RECOMMENDATIONS.
9. ALL PLANT MATERIAL SHALL CONFORM TO AAN STANDARD FOR NURSERY STOCK,
LATEST EDITION.9. PLANT MATERIAL OF SIZE OR KIND THAT IS NOT
AVAILABLE MAY BE SUBSTITUTED WITH APPROVAL OF OWNER AND
THE CITY OF EDMONDS.
10. PLANTING MEDIUM SHALL CONSIST OF 6" COMPACT DEPTH NATURALLY OCCURING
FRIABLE, FERTILE TOPSOIL CAPABLE OF SUSTAINING PLANT GROWTH, OR
SUBSTITUTE AS APPROVED BY LANDSCAPE ARCHITECT.
N
/cn
': Aa.
En
rA
Z
-Renc
L?08th St. 5. 1
I : x
SHRUB PLANTING DETAIL
No Scale
20 10 0 20
SCALE: 1"=20'
rune diseased and
roken branches
f
,pter basin with
mulch
am acted topsoil
�atepr thoroughly,
-rtilize as req'd
lanting hole min.
Nice size of root ball
2 X 2 X 36" WOOD STAKES:
3 PER TREE.
16 GAGE GALV. WIRE THROUGH
BLACK HOSE. CUT WRE & TWIST
INSIDE OF STAKE.
2" BARK MULCH: PROVIDE 3'
DIA. BARK MULCH CIRCLE
AROUND BASE OF TREES IN
LAWN AREAS.
PULL BURLAP OFF TOP 1/3
OF BALL & CUT OFF.
BACKFILL W/ 25% ONSITE
TOPSOIL AND 75% 3-WAY
MIX. (THOROUGHLY BLENDED)
FULLY COMPACT SOILS
DURING PLANTING PROCESS.
-PIT TO BE TWICE DIAMETER
OF ROOTBALL & 6" DEEPER.
EVERGREEN TREE PLANTING DETAIL
No Scale
TRASH ENCLOSURE DETAIL
SCALE. 1" =10'
Lav
LAWN / PLANTING BED DETAIL
No Scale
Planting pit min.
twice, size of root
ball ,
6" mi
Ipsoil
bed
Prune diseased and
broken branches
16 gauge steel -wire
through clear vinyl
hose below first crotch
2x2 wooden stakes
securely driven into
ground. Stain brown.
Water basin with 2" mulch
Unqlazed planting pit
surface
-1/2 to soil, 1K2 native soil,
water thoroug ly, fertilize
DECIDUOUS TREE PLANTING DETAIL
No Scale
RESUB
OCT 0 9 2008
BUILDING DEPAR7MENT
CITY OF EDMONDS
... ....... . . ..........
A PORTION OF THE SE1/4 OF SEG-19, T27N, R4E'*, WM
SANITARY SEWER STANDARD NOTES:
D
A.
I. ALL SANITARY SEWER PIPE, MATERIALS AND MANHOLES SHALL CONFORM NTH
.... ...... .. ..... .
. ................ ............. ..
..CUf?REN..T..,APPU.C.AB.LE...,AP.WA &_WSD*T STANQARDS.,ANQ $PECIFIQAWN$..ANQ BY.J.-H-E .. .. ........ . . ..... -FLUR,-Y--.V.V--Y-RICK...�'..�..
. .... . .......... . .. ..... . ..... . .........
CITY OF EDMONDS.�
CITY OF EDMONDS LIMITS 30, ROW &ASSOCIATES, INC.
2. TRENCH BA(KFfLL OF SANITARY SEWERS SHALL BE IN ACCORDANCE WITH INSDOT
TION 7-08.3(3) AND AS APPROVED BY THE CITY OF EDMONDS ENGINEERING - PLANNING - SURVEYING
U) STANDARD SPLCIFICA
ENGINEER AND INSPECTOR.
0 10 20 40 E.XIST. BL;`)'G, 22' 2',-- 3409 McDougall Avenue, Sulte 102
U 02 5 STA 11+17.00 ±25.70' LT .... .....
Everett, WashIngton 98201
1-6- CAP (MJ) Z 3. ALL SIDE SEWERS SHALL'BE INSTALLED BY THE REQUIREMENTS OF THE CITY OF Phone 425.259.0964
THRUST BLOCK
EDMONDS.
4. ALL SIDE SEWERS SHALL BE INSTALLED AS FOLLOWS:
4
A) 2% MINIMUM UNIFORM GRADE.
x `7-
------ J B) CLEAN OUTS SHALL BE PER THE CITY OF EDMONDS STANDARD DETAIL E6.2.
-7 x
x
x x --L J
X
C) 2 FEET BETWEEN BENDS OR AS APPROVED BY THE CITY OF EDMONDS
bTA ±10+76.00 11,00'.]
INSPECTOR.
X CONNECT W EXIST GV
D) CI FANING AND TESTING PER SECTION 7-17.3(2) OF THE WSDOT STANDARD
0 SPECIFICATIONS.
6 z
vi
9 RIM=441.53 E) ALL COUPLERS, FITTINGS, ADAPTERS AND CONNECTIONS SHALL SUBJECT TO THE
'r -Ly
Ss CO 3 0 L
591144-391.90
FF=441.00 IE=436.37 CITY o -NNW OOD <
IE-436.58 f APPROVAL OF THE CITY OF EDMONDS INSPECTOR.
BLDG 2 L=12.049
0+87 j
SLF 6" PVC co
TIL PERMITTED, INSPECTED BY THE CITY AN
0
R=20.000 F) NO PIPE SHALL BE BACKFILLED UN
5U` 6' PVC I D
D A -BUILT BY THE CONTRACTOR.
C,j
[ :V - < S
0+40 A=34'31'05"
STA 10+76.00 ±25.70' LT x
Typ 8 -6" 90- BEND (MJ)
7 0 1
-_75 TION STAKING SHALL BE
5. ALL VERT1CAL AND HORIZONTAL CONTROL FOR CONSTRUC
I HRUST BLOCK
7 PERFORMED UNDER DIRECTION OF A PROFESSIONAL LAND SURVEYOR OR ENGINEER. w
ALL CONSTRUCTION STAKING SHALL BE PERFORMED BY LICENSED PE, PLS OR M z
z
1k, 00
_zU.1 , :3 �a 1 0 COMPETENT INDIVIDUALS AS APPROVED BY THE CITY OF EDMONDS. ALL < Z 0
- , I .. �3 IL >
01 *., �-u :; V-. I to �t �5 a.
+ + + U
z \ : 0 to FF=441.50
T.:; Aw j .�!n I CONSTRUCTION STAKING SHALL BE INSTALLED AND VERIFIED FOR GRADE CL
I IL
M
BLDG I CITY.OF LYNNWOOD UTILITIES AND ALIGNMENT PRIOR TO THE START OF CONSTRUCTION. F_
-7
8
1 .,7 L 7 1 �:.. : - 1 4 ... TING SEWER LINE SHALL BE DONE SO AS TO
0+56 WYE 6. ALL CONNECTIONS TO AN EXIS
LT TING SEWERS.
1 STA 10+3�.07 .10.7, PREVENT ANY FOREIGN MATERIALS FROM ENTERING EXIS 0
5LF 6* P
_7
0 z
FF=441.80
BLDG 4
FIRE TURNAROUND
r=
f
GROUND/ROADWAY
THIN
STEEL
C,I, OR D.I.P.
PART CHART
1h' MTR SETTER
A.Y. MCDONALDi M30-FW8-WWFF-6_6_
FORD VBB86-95147-OU
ss CO 2
RIM=441.25
IE=435.74
5UF 6" PVC
TYP
0+30
5LF s" PVC -44
RIM=441.51
w
p4
CiRnUND/ROADWAY
34 M 6*
Tl_
C1j Ulm
SJMH 4 -7
Sr: 2-1 T
8) Typ
TWSH
N89'[
1 6.17' 1 P+00
132LF 8:1.VO
2!!3
!!3
10 0 El
1,=31.37
..65'39'11
,\\ n8TYP R=30 000
4.00L
FF=441.00
BLDG 3
V 00
NOTE:
ALL UTILITY 'INES ARE TO BE STUBBED DIRECTLY TO EACH TOWNHOUSE UNIT. UTILITY LINES ARE NOT
PERMITTED 1('f PENETRATE THE PARTY WALLS SEPARATING DWELLING UNITS.
EX!ST BLDG.
NUTE, SERVICE TAP M K4IN SHALL BE ANGLED AND WIT EXCEED 22 DEGREES
1) 2' (IP THREAD) DOUBLE STRAP SADDLE EQUAL TO ROMAC
STYLE 202 IS REQUIRED REGARDLESS OF PIPE MATERIAL
2) 21 BRASS CORP. CC X MIPT�
3) 2- 2' BRASS STREET ELLS FOR SWING JOINT
4) IPS POLY HI-MOL PIPE <160 PSI) OR COPPER TYPE K PIPE
WITH MALE IRON PIPE SIZE. FOR POLY & IPS OR CTS PACK JOINT
FILLING,
5) 12 GAUGE SOLID C13RE WIRE (TRACE WIRE). STRIP PLASTIC AND
WRAP AROUND BRASS AT BOTH ENDS.
6) 2' STAINLESS STEEL STIFFENER AND 2' HIPT X IPS PAC JOINT
7) BALL VALVE (IRON PIPE SIZE) CURB STOP,
8) BACK SIDE OF METER BOX SHALL BE SET AT THE PROPERTY LINE.
NOTE, (METER BOXES SHALL NOT BE PLACED IN DRIVEWAY AREAS)
TRAFFIC SAFETY FEATURE, -
BREAK OFF FLANGE, NUTS--,
AND BOLTS,
3' x 3' x 3.5' THICe-l",
CONCRETE PAD AROUND HYDRANT
10 MIL PLASTIC _T_j�
BETWEEN BLOCK
HYDRANT
E71SSMH 3
STA: 1 - 43.20, 1.93L
[flSSMH 2
S' 0+88.56, 3.42L_
1/4' RAKE PER FOOT FROM
GROUND LEVEL
DOUBLE SIDED BLUE RAISED
-MIN, 6' BEHIND BACK OF PAVEMENT MARKERS
SIDEWALK
4' STORZ ADAPTER
ALIGN VALUE BOX EARS TEE WITH FLANGED
w ,
PARALLEL WITH THE WATER CONNECTION FOR
�i
�z '��\_LINE IT SERVES HYDRANT VALVE
�u w,> wt S, \
In 0E /- DEWALI
< 1110
WEDGE VALVE
RESTRAINED JOINTS
CAST IRON ADJUSTABLE
VALVE BOX
THRUST
BLOCK
7 1 '18'x18'x4'
CONC. BLK.
UNDISTURBED EARTH 10 MIL PLASTIC
1"2 Cy WASHED 1-1/2' ROCK BETWEEN BLOCK
WITH FABRIC CLOTH ABOVE FLANGED CONNECTION & TEE
HYDRANT CONNECTION PIPE TO
THRUST BLOCK BE DUCTILE IRON CLASS 52. ANY
INTERMEDIATE JOINTS TO BE CONCRETE
Lp p,
L=54.108
A=65'57'41"
13=47.000
CONNECT TO EXI�T,.WM
I -TAPPING' TEE AND VALVE
j.ao. 1 CTE STA 10+37.00 31.15' R F 10 3 4- THRUST BLOCK
4!
I -FIRE HYD ASSEMBL EX WATER SYSTEM STANDARD NOTES
THRUST BLOCK HYDRANT
1. ALL WATER MAIN, FITTINGS AND MATERIALS SHALL CONFORM WITH
:4
cf). CURRENT APPLICABLE APWA & WSDOT STANDARDS AND SPECIFICATIONS
0+32 WYE c3
5LF 6' PVC AND BY THE CITY OF EDMONDS.
En
0
2. ALL WATER MAINS SHALL BE PRESSURE TESTED AND DISINFECTED IN
>
a. ACCORDANCE WITH THE MOST CURRENT ADDITION OF THE WASHINGTON
�7 TIONS FOR ROAD, BRIDGE AND MUNICIPAL
STATE STANDARD SPECIFICA
�]IE HIMC
56LF 8" PVC
SS MH I
[�JE7]37A: 0+32.84, 5.01R
(;v
N
x
2
212th St,
ALL PRESSURE TESTING SHALL BE DONE IN THE PRESENCE OF A
REPRESENTATIVE OF THE CITY OF EDMONDS. ALL MAINS SHALL BE
STERILIZED AND FLUSHED PRIOR TO PLACING LINES INTO SERVICES. THE
MAIN SHALL BE INSPECTED BY THE CITY OF EDMONDS INSPECTOR PRIOR
TO BACKFILL. AN AS -BUILT COPY SHALL BE PROVIDED TO THE CITY OF
43L 9- -PVC EDMONDS PRIOR TO ACCEPTANCE.
3. CONCRETE THRUST BLOCKING SHALL BE PLACED AT ALL BENDS, TEES,
z 0
- -48 DEAD ENDS, CROSSES AND AS DESIGNATED BY THE INSPECTOR.
N*8' 9-32' 10-W 04
BLOCK114G SHALL BE CLASS 3000 CONCRETE MIX OR AS APPROVED,
EXIST SS MH POURED IN PLACE AND CURED AGAINST APPROVED FORMS AND NATIVE
STA: 10+04.90, 9.84R CUT SLOPES. ALL BLOCKING SHALL BE INSPECTED AND APPROVED PRIOR
TO BACK FILL.
0+00 ROAD 'A'
=10+00-00 76th AVE W 4. FIRE HYDRANTS SHALL CONFORM TO THE CITY OF EDMONDS STANDARD
DETAIL--E7_1_+tlL.
=cA208th STREET SIN I
T IRS SHALL CO TO CITY OF EDMONDS
E
q
5. ALL 1 WATER ME
RDjeETAIL E7.6.1.
6. BEDDiNG F �-:!tfi PER WSDOT STANDARD PLAN NO. B
TON
BACKFILL SHAU BE PLACED PER SECTION 7-10.OF..THE WASHING
0 4" ... . I L' , " *
STATE STANDARD SPECIFICATIONS FOR ROAD� �'BR DOE AND MUNICIPAL
CONSTRUCT,011, APPROVED PLANS AND C!TY'OF EDMONDS SPECIFICATIONS
AND STANDARDS.
!q - - , -1 1
w
SF,1_9+50.00 CITY OF 7. ALL WATER MAINS TO MAINTAIN A MINIMUM COVER OF 36 INCHES
BELOW FINISH GRADE.
i; .2 EDMONDS
LIMITS
A 4
SKI&* 5s I foe C14Y of �yll
WATER SYSTEM CONSTRUCTION NOTES:
SANITARY SEWER CONSTRUCTION NOTES: -
THE CONTRACTOR SHALL VERIFY SIZE, LOCATION OF THE EXISTING WATER SYSTEM IN 76th :AVENUE W AT
LEAST 4B HOURS PRIOR TO BEGINNING CONSTRUCTION AND NOTIFY THE CITY AND THE OMERS ENGINEER OF
F-1]
CITY OF LYNNWOOD SANITARY SEWER INSIDE RIGHT OF WAY. ALL INSPECTIONS OF THE SANITARY SEWER
INSIDE THE RIGHT OF WAY SHALL BE PERFORMED BY *ME CITY OF LYNNWOOD INSPECTOR.
EXISTING CONDITIONS.
EXISTING WATER MAIN TO REMAIN IN SERVICE.
CITY OF EDMONDS SANITARY SEWER ON OUTSIDE RIGHT OF WAY AND ON SUBJECT PROPERTY. ALL
INSPECTIONS OF THE SANI',,^ARY SEWER ON THE PROPERTY SHALL BE BY THE CITY OF EDMONDS INSPECTOR.
SAWCUT EXIST PAVEMENT AS REQUIRED FOR WATER LINE. SEE ROAD CONSipUCTION NOTE, 4 ON SHEET C7
EXISTING SANITARY SEWER MAIN AND MANHOIF TO REMAIN IN SERVICE.
FOR PhVEMENT RESTORATION.
INSTAI1 17-1" SINGIF WATER METERS IN CLUSTER. N6 (Y";_�W ?[()Pa$ ej - M & (-S J10 1104
kLCe4
THE CONTRACTOR SHALL �ERIFY LOCATION AND INVERT ElFvA-noNs OF EXISTING SANITARY MANHOLE PRIOR
4;
1A Ck Vinb (110-Ai Sfd'��
TO CONSTRUC11ON OF SANITARY SEWER.
FIRE HYDRANT SHALL BE CONSTRUCTED PER THE CITY OF EDMONDS STANDARD DETAIL E7.1,
&Aia5 e
R5
SAWCUT EXIST PAVEMENT FOR NEW SANITARY SEWER CONSTRUCTION. THE PAVEMENT RESTORA11ON SHALL
THE CITY OF STANDARDS AND SPECIFICATIONS ON THE EAST SIDE OF THE CENTER LINE
56 LF 6" DIP WATER LINE. CONNECT 17-1" WATER SERVICES AND METERS TO 6" LINE. SEE WATER SERVICE
BE PER LYNNWOOD
OF 76th AVENUE W (CITY OF LYNNWOOD SIDE OF RIGHT OF WAY). ALL PAVEMENT RESTORATION SHALL BE
INSTALLA11ON DETAIL THIS SHEET.
PER THE CITY OF EDMONDS STANDARDS AND SPECIFICATIONS ON THE WEST SIDE OF THE CENTERLINE OF
APPROXIMATE LOCATION OF WATER SERVICE TRENCH
76th AVENUE IN (CITY OF EDMONDS SIDE OF. RIGHT OF WAY). SEE ROAD CONSTRUCTION NOTE 4 ON SHEET
C7 FOR PAVEMENT RESTORATION.
TYPICAL WATER SERVICE TO INDIVIDUAL UNIT
n6
NEW 8 PVC SANITARY SEINER MANHOLE SHALL BE CONNECTED TO NEW 8" SANITARY SEWER IN RIGHT OF
OWNER TO PROVIDE APPROX 20' BY 5' WATER EASEMENT FOR METERS TO THE CITY OF EDMONDS.
WAY.
@
OWNER TO PROVIDE 5' BY 5' FIRE HYDRANT EASEMENT TO THE CITY OF EDMONDS.
n7
CONSTRUCT STANDARD TYPE 1 48" DIA SANITARY SEWER MANHOLE AT LOCATION NOTED (TYPICAL). SEE CITY
OF EDMONDS STANDARD DETAIL E6.1. SEE PROFILE FOR VERTICAL INFORMATION.
0
REMO�E EXISTING WATER LINE TO EXISTING GATE VALVE AT 8" WATER MAIN. CONTRACTOR SHALL PROVIDE
n8
CONSTRUCT NEW SIDE SEWER SERVICE LINE, LOCA11ON AND I ENGTH AS NOTED. PLUG AND MARK WITH 2x4
NECESSARY FITTINGS TO CONNECT NEW 6" DIP TO EXISTING GATE VALVE.
WOOD POST PLACED AT EACH BUILDING TO MARK THE SIDE SEWER LOCATION.
Z %..of 0
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SEAL
NO. REVISION DATE
REV PER CITY
COMMENTS 7/31/08
REV PER CITY
COMMENTS 9/22/08
REV PER CITY
COMMENTS 10/9/08
R' MTR SETTER 9) 2' BRASS 90' BEND I RESTRAINED BRICK R9 CONSTRUCT NEW SANITARY CLEANOUT. SEE CITY OF EDMONDS STANDARD DETAIL E6.2, A 12" LOCKING
AN, MCDONALD M30-FZ-08-WWFF-77 10) WATER METER- TO BE SUPPLIED BY THE CITY. CONTACT PUBLIC WORKS CAST IRON LAMPHOLE COVER IS REQUIRED ON THE CLEANOUT IN ALL PAVED AND /OR CONCRETE SURFACES. DESIGN:
FORD VBBBZ-95147-On BEFORE INSTALLATION [IF THE OUTLET HALF OF THE SETTER. GJL
11) 2' METER SETTER WITH HIGH BYPASS PER AN. MCDONALD OR FORD N 0 T E S DRAWN:
(SEE PART CHART TO THE LEFT) VERT. IN, VERT, OUT, FLANGED BALL C"
VALVE WITH LOCK WINGS. GJL
12) STACK 2 METER BOXESi MID STATE PLASTIC METER BOXES <MS 1. HYDRANTS AND ALL MATERIALS TO BE IN ACCORDANCE WITH CITY OF EDMONDS
0
17x30x12), WITH MS 17x12 DUCTILE LID WITH 9'x6b' READER. PLACE APPROVED MATERIAL LISTINGS, 8 CHECKED:
BACK OF BOX AT PROPERTY LINE,
13) BRASS NIPPLE 2, HYDRANTS SET IN CONCRETE REQUIRES AN EXPANSION STRIP AROUND HYDRANT RMF
BARREL, IN ADDITION, THE INSTALLATION OF THE HYDRANT ON PRIVATE
14) 2' THREADED BRASS NIPPLE (12' LONG) PROPERTY SHALL EQUAL OR EXCEED STANDARDS SET FORTH FOR THE INSTALLATION
15) SCHEDULE 40 2' PVC CAP, REMOVED WHEN CONNECTION MADE OF PUBLIC FIRE HYDRANTS IN THE CITY OF EDMONDS. SCALE:
TO CUSTOMER LINE, 3, PROVIDE FOR VEHICULAR TRAFFIC PROTECTION,
16) 4' X 4' X 8' CONCRETE BLOCK SUPPORTS. 4. ALL HYDRANTS SHALL BE PROVIDED WITH (2) 2-1/2' HOSE NOZZLES AND =20'
PUTEr ALL FITTINGS SHALL BE BRASS. 17) 2' RESILIENT WEDGE GATE VALVE (F.I.P. X F,I.P,). ULFM APPROVED, (1) 4-1/2' NST PUMPER NOZZLE WITH 4' STORZ QUICK COUPLING ADAPTER, Rat cmKosAce, WACO—) PROJECT NUMBER:
IF USING 1-112- METER, ALL PARTS FUSE BONDED EPDXY COATED BODY AND BONNET, WEDGE FULLY S. STEAMER PORT SHALL FACE THE STREET OR ROADWAY FOR FIRE ENGINE ACCESS. 1�
SHALL BE.i-112, ExcEpr THE 2, vEvaE ENCAPSULATED WITH RUBBER AND WITH 2' AWWA OPERATING 6. THREE FOOT MINIMUM CLEARANCE SHALL BE MAINTAINED AROUND HYDRANT Zoo Twyftilt MBC0001
GATE VALVE VITH BRASS BUSHINGS, NUT. EQUAL TO CLOW F-6103. WHEN PLACING LANDSCAPING OR ROCKERIES (ETCX UTILITY CONFLICT NOTE:
0 DATE:
18) 2-PIECE VALVE BOX. TOP SECTION TO 13E RICH 940 STYLE 7. FIRE HYDRANTS SHALL BE PAINTED SAFETY YELLOW 0
n
18' WITH REGULAR BASE SECTION. LENGTH TO FIT, 0. CONSTRUCT 3' X 3' X 3,5' THICK CONCRETE PAD AROUND HYDRANT PIPE. A zA 4 -1��ria i 7WA 0 MAY 1, 2008
. C� (M-V61 � M
AU I JUN:
77-77r�-�
THE CONTRACTOR SHALL BE RESPONSIBLE FOR VERIFYING THE LOCATION, DIMENSION, AND DEPTH OF
ALL EXIS11NG UTILITIES WHETHER SHOWN ON THESE PLANS OR NOT, CONTACTING ALL U11LITY
M: ..'N'..
T
C.7-:1-TY... --O-F*-.
-I - . 11 Ik,' I "I". _� . . . i . COMPANIES, POTHOLING THE UTILITIES, AND SURVEYING THE HORIZONTAL AND VERTICAL LOCATION
REVI I NS REVI!�IQNS;
APPFMVED BY DATE STANDARD DETAIL APPFMVED 13Y DATE STANDARD DETAIL PRIOR TO CONSTRUCTION. THIS SHALL INCLUDE CALLING UTILITY LOCATE @ 1-800-424-5555 AND THEN
- POTHOLING ALL OF THE EXISTING UTILITIES AT LOCATIONS OF NEW UTILITY CROSSINGS TO PHYSICALLY
6/16/03
D. GEBERT 6/16/03 D, GEBERT
1-1/2 and 2" WATER SERVICE INSTALLATION FIRE HYDRANT ASSEMBLY VERIFY WHETHER OR NOT CONFLICTS EXIST. LOCATIONS OF SAID UTILITIES AS SHOWN ON THESE PLANS
I), GEBERT 10/6/03 nA= T_ 1-1 � D. GEBERT 4/2/07 DME SCAU DING NO. ARE BASED UPON THE UNVERIFIED PUBLIC INFORMATION AND ARE SUBJECT TO VARIATION. IF CONFLICTS
1890-19C30 1). GEBERT 7/24/01 Ts E7.6.1 189()-1990 7/24/01 NTS E7.1 SHOULD OCCUR, THE CONTRACTOR SHALL CONSULT THE PROJECT ENGINEER TO RESOLVE ALL PROBLEMS
111 11111 4/2/07 1 - _ - PRIOR TO PROCEEDING WITH CONSTRUCTION.
11%,11
V 411,��,
N
WO
4.
737-
0
cilb
EX. SHED
J10.
X
IT
MAPLE:
10
206th St. S. W
—TEX. MONICASE
. &� I I -+ io' I I
MUM80 y@w0Lw9U0ff0 @10EDID . I VZIN
cp
EXIST. BLDG.
EX. CB
RIM-LT437 . 76
E. --435.88
1619 4 A I
— — — — — — — — — — — — —
.0 ------------ T A
-----S89'142. M-7V --------------------- . .1
x X X
r -.,> MULM a tTir ACOU OL1,VU .. . .'
EX. CB
RIM=439.86
EX. CB
440
RIM=43Z95
1. E. =435.92 Q)
0:� , V
co
co
A A
4�
7717171 7 77 77 7 77 777777777777 7/
0
\ \ . I
r. 04
41'. 1
0
0i
Es
Ian,
1 4
%
NO
Cll
EX. F. H.
EXIST. BLDG. Id
/t
INfflAL BENCHMARK
SNO. CO. PT J2704PO5
2" BRASS r,4P INT 76TH AVE. W.
& 204TH ST. S.W.
ELEV. =435.281
-ii�- Benchmark
TOP MON IN CASE
ELEV.=43Z 17
DATUM: NAVD88
EX, CB
PIS
RIM=437.13
0. E =435.03
CB
P4
R 43 X
9
=439. 1
E 3 x
. 4 3, 7. 2
A' 4
208th St. S. W
G�
HED
GE —71 — — — — — — — — — — — __j 8" EX. SSMH
- - - - - - - - RIM=437.53
---------- 30.00'
- -- ---------
S89*13'40"E 318.64' --/ - - -w': I.E.=428.93 (CTR.)
RIV. BELL TEL. ESMT
-EXi RET. WALL (A.F. J1978007)
Legend:
+ EXISTING MONUMENT
@) EX RE6ARICAP L.S. #10702
(C)
CALCULATED DATA
(P)
PLAT DATA
(M)
ME4SURED DATA
Es
WATER METER
)%Y
EX. FIRE HYDRANT
N
WA TER VA L VE
Gv
M
G.4S VALVE
FP I
POWER VAULT
()-
UT7LfTY POLE
E-
UTILITY ANCHOR
E3
TELEPHONE RISER
YARD LIGHT
SLOW OFF
C3
MAIL BOX
[I]
JUNCTION BOX
rl
STREET SIGN
STREET LIGHT
EX. CB, TYPE 1
CATCH i3ASIN TYPE 2
0
SAN SWR. MANHOLE
ss—
SAN. SWR. PIPELINE
w —
WATER PIPELWE
T.B.R.
TO BE REMOVED
EXIST. BLDG.
MR
Equipment & Procedure:
LEICA TCA I 100- FOR FIELD TRAVERSE
AND TOPOGRAPHY
MONUMENTS VISITED 11107
PRECISION EXCEEDS STATE STANDARDS.
CITY OF EDMONrS ESM'T, X EX. Ca I / A.' IMH
RIM-413& 15 EX' Ce
(A.F. J89101CO541) RIM=436.97 RIM=4 7.48
LE.=434:20
I.E.=4,34.87 tN) E -4, 2.08 (8')
I.E.=433-92 JEW) ��:L OF WTR.
4
. A
0
f
Legal Description:
LOT 10 OF WILLOWDALE GARDENS DIVISION NO. 1, ACCORDING TO THE PLAT THEREOF,
RECORDED IN VOLUME 10 OF PLATS, PAGE 72, RECORDS OF SNOHOMISH COUNTY, WASHINGTON.
SITUATE IN THE COUNTY OF SNOHOMISH, STATE OF WASHINGTON.
212th St. S. w
EX. MONICASE
19 20
30 29
Basis of Bearinq:
PLAT OF WILLOWDALE GARDENS DIV. 1
(VOL. 10, PG. 72)
GRAPHIC SCALE
10
0 10 20 4 0 81
60 = 6 610m�
1 EN = Room= TTTF�
( IN FEET )
I inch = 20 ft.
Fr
WA
EX IRES 2/25/lOr
14"
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9
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CQ
to
CQ
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4)
N.E. 1/4, S.E. 1/4, SECTION 19, TOWNSHIP 27 NORTH, RANGE 4 EAST, W.M.
LU
M
EXISTING FENCE TO REMAIN
ot
EX. SHED A
x
PROJECT INFORMATION
APPLICANT/OWNER
MURPHY BUILDING COR�ANY
6203 202ND STREET SW
LYNNWOOD, WA 98036
425-775-3388
CONTACT
LAUREY TOBIASON
TOBIASON & COP INC
20434 IOTH PLACE SW
SEATTLE, WA 98166-4106
206-429-2875
SURVEYOR
DAVE WEST
2120 HEWITT AVE.
EVERETT, WA 98201
425-252-7088
ENGINEER
MARK FLURY
3409 McDOUGAL AVE.
EVERETT, WA 98201
425-259-0964
OWNERS OF RECORD
SAME AS APPLICANT
TAX ASSESSOR NO.
00614300001000
SITE ADDRESS
20628 76TH AVE. W.
EDMONDS, WA
SEC. 19, TWN. 2 7 RGE. 4
HUMMY Y@w00@u0Lw0
EXIST. BLDG.
. ........
. .
PARKING
,.TYPICAL 40", 0
...... . . ....... .
-TREE—
SAVE TYP.
— — -------- — . ..... . . ........ . . ........ . . .......
EXISTING FENCE TO REMAIN
CONC.
WHEEL STOP
TYPI A
C L7
s8g�-'14'229j"E\ 3,18.72'
x
X
OVFRHAN yp
......... ......
COVERED
PORCH
__440—
PROPOSED
BUILDING
42'
OVERED
ORCH
ACCESSIBLt 0
LO
3d.—Oot 7
N
A -
SPACE
...... . . .
00
0
0 "ED
4 PROPO
...............
COVERED,j.
PORCH BUILDING\
D
COVERED ...... I COVERED
g, '��7 ......... ........... — 1 -77 INITIAL BENCHMARK
COVAE : —.1 1-- COVERED 00 zu
PORI............ * . .........
Po. PORCH ........... *.'PORCH
...... PORCH ......... .
...... .. .
0
.on
COVE
A I--
SNO. CO. PT. #2704
LL. & 204TH ST. S. W.
........ .
COVERED
oil
2 BRASS CAP INT.
............ ...... .
ELEV. =435.281
AL
OVERED
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PORCH
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....... ........ TOP MON IN CASE
1 0 1 . - ... ..
27
.............. ELEV.=437.17
............ .......... .... .......
........ .. . ..... ...... DATUM: NAVD88
...................... ..........
.9
24
4. Z.,
20' �N r
..........................
.. ..................
SEWR . ...... ....... .
if
PRIVATE DRIVEWAY
e-1 0 L,
.......... .............
ell, . ........ :t
..........
COVERED ......
............ .... . ......... ;i
EX. F. H.
COVERED
PORCH"'
?
-1.5'
14
P 0
RCH
..........
CON EREd"'*�� COVERE
VERED :COVERED I
POR �H ]PORCH
COVERED 'PORCH PORCH E_
LPARKING ............. PORCH
ANG TYP.
TYPICAL 4
A
PROPOSED
4 2 4—
BUILDING
T
Z.
CC)VEihf) ,.EXIST. BLDG
....... TBR ........... . .... . ... ...
....... ... .. .........
PORCH \ n
!I! V I= 1!
POVERHANG TYP. I I OVERHANG �&P
P. N. W. W�L L TEL. 'ESM T. S8.9-13'40"E 318.64'
440 (A.F. #1978007) AVE HEDGE AS POSSIBLE
'EXISTING FENCE TO REMAIN
F_ - - - ------ - - ------ - - --------
SITE DATA
EXISTING ZONING:.
RM-2.4
PROPOSED ZONING:
SAME
TOTAL SITE AREA:
41,485 SF
PROPOSED LOTS:
1 LOT
LOTS PER ACRE:
NIA
AVERAGE LOT SIZE:
N/A
SMALLEST PROPOSED LOT:
N/A
DUPLEX PROPOSED:
NONE
WATER DISTRICT:.
CITY OF EDMONDS
SEWAGE DISPOSAL:.
CITY OF EDMONDS
SCHOOL DISTRICT.
EDMONDS SD NO. IS
FIRE DISTRICT:.
OPEN SPACE DATA
TOTAL:
N/A
PERCENT OF SITE:
N/A
SLOPE DATA
0-15% SLOPE:
ENSTIRE SITE
15-20% SLOPE:
20-25% SLOPE:
25-33% SLOPE:
>33% SLOPE:
ROAD DATA
LINEAGE:
N/A
ACREAGE%
N/A
PERCENT OF SITE:
N/A
EXIST. BLDG.
w
X
..... .... . ... .....
....... ............
........ BPI,
It
30.00'
F,
CITY OF EDMONDS ESM'T.
(A-F #8910100541)
0
0
PARKING SPACES REO'D -3
PARKING SPACES PROPOSED
BARRIER FREE PARI(ING SPACES
PARYJNG ANALYSIS
UNIT COUNT: 17 UNITS
PARKING PROVIDED: 34 COVERED SPACES
5 GUEST SPACES
PARKING REQUIRED: 34 SPACES
NOTES:
SEE ARCHITE(TUAL PLANS FOR LIGHTING LOCATIONS . .. .
NO PARKING SIGN
..................
6
A
.4":)
BUILDING
HEIGHT CALCS
. ...........
luj
a 0
U) y)
r
""08th 5t. 5. W
APPROVED,
W, PLANNING
Zohe MZA Comer Flag —
Setbacks
Required
Actual
Front (�7
15-
13-
Sides /45
kk ho
Rear VJ
Other
HeiSht
30
TYPICAL PARKING DIMENSIONS
8.5'
............ if
MINIMUM PARKING SPACE DIMENSIONS
PARKING CALCULA TIONS
REQUIRED SPACES= 2 PER DU = 2X17= 34
SPACES PROVIDED= 35 SPACES
SCALE.- 1 '201
LEGAL DESCRIPTION:
LOT 10 OF WILLOWDALE GARDENS DIVISION NO. 1, ACCORDING TO THE
PLAT THEREOF, RECORDED IN VOLUME 10 OF PLATS, PAGE 72, RECORDS
OF SNOHOMISH COUNTY, WASHINGTON;
EXCEPT THE WEST 318 FEET THEREOF.
SITUATE IN THE COUNTY OF SNOHOMISH, STATE OF WASHINGTON.
P 2x
6' d1N. HT. IN,
PT4
POST
PT 2x4
FRONT FLEMON 2" FROM BOT110M
N.T.S IX6 TO GROUND
trl
L. WOOD CAP co LJ
DT 11.
PT 04- -
)X6
6' MIN. HT.
SITE
THIS SIDE
PT 2x4
,
T,
SME ELEVATI
TYPICAL 6'SOLID FENCE N.T.S.
NTS �
TRASH ENCLOSURE DETAIL D-VW-ML )
4&1
Tn
.. .. ......................
G
FESUB
R
CT 0,9 2003
BUIL ING DEPAR7MENT
cl OF EDMONDS
KEYSTONE WALL -
ON PROP. LINE
PATIO
STONES
-
00
06
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. ............. ............. i
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I .................... �� I � .............. ','TUB "" W.-A-1 .11 W - w -
...
........
........ .........
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TO 4' HIGH AT UNITS *C* .. . 1.1.1.*.,.,.*.-.,.,.*.,.*.,.*.,. .
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.-.,.,.,.*.,.*.,.*.*.,.*.,.,.,.,.,. FUTURE ............l..... I . .. i
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.........................
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....... ....
14" DECIDUOUS
WOOD
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-
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14" DECIDUOUS WOOD FENCE
- 11 ON PROP. LINE
318.71'
rvm tLtvAlluri . . 7.1.1...............l..... *:A i I
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BLDG. AREA= 1.0". . .......... I i .l.l.*.*.*.7.*.7 ............................ .. - i
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............. 441-1 x
. , , 6 _____� I .1.741.1.1 * ZD
77� 1 . 4 1 FUTURE ........., .... .............
/ .*.1.1.1.1.1.1 '......................... 4 0
. , .............
OFFSITE 'A 1 '" , 0 """"""", �
. - 31 �� c , BUILDING ........ ............. I
/A UNIT "B" ____ - = WA YE : .............l..........
BLDG I - - ----- I / c.v . . . . . . . . . . . . ............
�11, i / . I
111A I ... 4 .' - G_ - - - - - - - - - - - - - - -_ - I HYDR �RT.* .... .. . . _......................... I
,,-REMOVE EXISTING WOOD i ,< --- pwa - -- ------- =. 'm __� PkLm pm pwa) - . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............ . . . . . ............... i I
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....... : . . . . . . . . . . . . . ...
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FENCE (5.5- HT.) BACK 6* ,' - I r 0�,.-��.-.-.-Z: --------- U ----- ------ ----------------------------- - ------------------- - ------------------- a - I , 11 ....... I
...
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............................ -----_ .-.l...*.l..l.l.l.l. �
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EXISTING RETMING :.*.....l.... 0 ................. "E.E.E.:1... v, ... . I
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........
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..
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" * :.4 j ,\ ..
W� ' ' 1
.. SEE SHEET L-2 FOR - ,---- ESIGN . ........ \ \ % .141.7.1.7. 4 - i
.141.1.7.1.1.1. 7.1.1.141.*., PLAN BY TOBIASON AND COMPANY, INC., _s-.-:.-.-.-.-. 7. . l...l.l.7.*.7.l .1.7.1.1.14 .. .
I.7.,.
. �' . .l.l.V.l.= I ....... .1.1.7.7.1. I I
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... ...... .... .... I .... I ....... "' I
V...,.* ...... ............ .-.-.-.-.7.-.-
4 EXISTING WOOD FENCE DATED 04/29/08, CITY #2008-0352 BOL .. \ .. = ... 1.1.1 .7.1.7.1.1.1 . ''�
0.2' E. OF PROP LINE : .-.7.7.7.7.1 ��:-,.: - 41 ,'-- POWER
] - ___ (6' HT.) TO BE RELOCATED - ' 'I -.*-.*.o*-.'.*-.'_.- W ..... I ... ........ .......................... I , � -wULE--
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.. . . ......... = .. .............
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.. I ........................
0 BUILDING .1.1 'I- ....
I 4 , - OF EXISTING RETAINING WAILL, ', .-..-.-.-.,.*.,.*. RISER "" l�.'-l.-l.'-.-l.'-.-l.-.l .. .......... I .
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* **"*"' ......................
RISER ........ __��_ .9. i
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I I 1-11` TO REPLACE REMOVED / . . . . . . : ......... I
KEYSTONE WALL-/ I UNIT "A" 4,,. 1 c............'....'..... I PLANTINGS TRANSFORME'.. " - 4 , I
. a 71 11 I
.
11 I �*.l.l-`-.*`-.*`**--l'. 1. . . / I
...
... .
1. . . . . . . . . . . ......... .
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C NC. � __;--, A. � ., � " ) - : �� I
WALL WALL ON PROPERTY � I I WOOD FENCE . . I . I
I LINE TO REMAIN . ON LINE . . ;h 1,
NuSuArING SEE SHEET L-2 . FOR
BARK ELEVATION
I
I
.
LANDSCAPE PLANTING NOTES AND MATERIALS
SCOM Of: WORK
FURNISH ALL MATERIALS, LABOR, EQUIPMENT AND RELATED ITEMS NECESSARY TO ACCOMPLISH
TOPSOIL, TREATMENT AND PREPARATION OF SOIL, FINISH GRADING, PLACEMENT OF SPECIFIED
PLANT MATERIALS, FERTILIZER, STAKING, MULCH, CLEAN-UP, DEBRIS REMOVAL, AND 90-DAY -
MAINTENANCE.
QUALIFICATIONS:
TOR TO BE SKILLED AND KNOWLEDGEABLE IN THE FIELD OF WORK AND
HAVE A MINIMUM OF FIVE (5) YEAR'S EXPERIENCE INSTALLING SIMILAR WORK. CONTRACTOR TO
BE LICENSED TO PERFORM THE WORK SPECIFIED WITHIN THE PRESIDING JURISDICTION.
JOB CONDITIONS:
IT IS THE CONTRACTOR'S RESPONSIE31LITY TO REVIEW THE SITE AND REPORT ANY
DISCREPANCIES TO THE OWNER OR THE OWNER'S REPRESENTATIVES, ALL PLANT MATERIAL AND
FINISH GRADES ARE SUBJECT TO APPROVAL BY THE OWNER.
PROTECTION: .
SAVE AND PROTECT ALL EXISTING PLANTINGS SHOWN TO REMAIN. DO NOT PLANT UNTIL OTHER
CONSTRUCTION OPERATIONS WHICH CONFLICT HAVE BEEN COMPLETED. HANDLE PLANTS WITH
M, BARK, OR BRANCHES. REPAIR AND/OR
REPLACE ITEMS DAMAGED AS A RESULT OF WORK, OR WORK NOTIN COMPLIANCE WITH PLANS
AND SPECIFICATIONS, AS DIRECTED BY OWNER AT NO ADDITIONAL COST TO THE OWNER.
REPAIR OF EXISTING PLANTINGS: .
DURING THE COURSE OF WORK, REPAIR ALL EXISTING PLANTING AREAS BY PRUNING DEAD
GROWTH, RE-ESTABLISHING FINISH GRADE.AND RE -MULCHING TO SPECIFIED DEPTH.
GUARANTEE:
T MATERIAL FOR A PERIOD OF ONE YEAR FROM DATE OF FINAL
ACCEPTANCE OF THE JOB BY OWNER.
90-DAY MAINTENANCE:
CONTRACTOR TO PROVIDE OWNER WITH A SCOPE OF WORK AT TIME OF INITIAL PROJECT BID
TO PROVIDE LANDSCAPE AND IRRIGATION MAINTENANCE FOR 90 DAYS FOLLOWING COMPLETION
OF PROJECT (ACCEPTANCE) OF FACILITY BY OWNER. WORK TO INCLUDE MAINTENANCE AS
DESCRIBED BELOW, IN PLANTING AND IRRIGATION MAINTENANCE.
MATERIALS: I
I
I
PLANT MATERIALS: I
LOT 1 1
WJLLOWDALE GARDENS DIVISION NO. I
VOLUME I 0 OF PLATS, PAGE 72
.
I
I
SOIL FERTILITY AND AGRICULTURAL SUITABILITY ANALYSIS:
AFTER ROUGH GRADING AND PRIOR TO SOIL PREPARATION, CONTRACTOR TO OBTAIN TWO
REPRESENTATIVE SOIL SAMPLES, FROM LOCATIONS AS DIRECTED BY. THE LANDSCAPE ARCHITECT, TO
LYTICAL & CONSULTING INC. RAVENSDALE WA, TEL. 253-653-5770 OR,
EQUIVALENT TESTING LABORATORY, FOR TEST #AO5-2. SUBMIT RESULTS TO LANDSCAPE ARCHITECT
FOR REVIEW. TESTS TO INCLUDE FERTILITY AND SUITABILITY ANALYSIS WITH WRITTEN
RECOMMENDATIONS FOR SOIL AMENDMENT, FERTILIZER, CONDITIONERS, APPLICATION RATES, AND
POST -CONSTRUCTION MAINTENANCE PROGRAM. TESTS TO BE CONTRACTED WITH AND PAID FOR BY
THE CONTRACTOR.
.
A) TOPSOIL:
CONTRACTOR IS RESPONSIBLE FOR SUPPLYING ALL TOPSOIL AND FOR DETERMINING
THE VOLUME OF TOPSOIL REQUIRED PER THE INFORMATION ON PLANS AND NOTED
HERE -IN. CONTRACTOR IS RESPONSIBLE FOR ANY NECESSARY WEED CONTROL
RESULITNG FROM CONTAMINATED OFF SITE SOURCES.
B) TOPSOIL TO CONSIST OF WINTER MIX AS PRODUCED AND REMIXED BY PACIFIC
TOPSOILS, INC. WINTER MIX TO CONSIST OF 1/3 BY VOLUME SANDY LOAM, 1/3 BY
VOLUME COMPOSTED GARDEN MULCH, AND 1/3 BY VOLUME COARSE WASHED SAND OR
EQUIVALENT. AT MINIMUM, TOPSOIL PRODUCTS BROUGHT' ON SITE TO CONTAIN
AMENDMENTS AS LISTED IN "C".
C) TOPSOIL TO INCLUDE THE FOLLOWING AMENDMENTS AS NECESSARY: .
THE FOLLOWING AMOUNT PER 1,000 SQUARE FEET:
1. 6-CUBIC YARDS ORGANIC COMPOST. COMPOST TO BE FREE OR NON -FARM
ANIMAL SOURCES, NOR TO BE FROM SOURCES CONTAINING REDWOOD OF CEDAR
PRODUCTS. .
2. 30-POUNDS NITROFORM (38-0-0)
3. 5-POUNDS AMMONIUM SULFATE
4. 40-POUNDS CALCIUM CARBONATE LIMESTONE
5. 40-POUNDS DOLOMITE LIMESTONE
6. 5-OUNES BORON (AS BORAX) .
ALL AMENDMENTS TO BE THOROUGHLY MIXED PRIOR TO INCORPORATION INTO TOPSOIL.
.
D) PLANTING BACKFILL FOR ALL TREES, SHRUBS, AND GROUNDCOVERS:
1. 0.6-CUBIC YARDS PER VOLUME TOPSOIL
2. 0.4-CUBIC YARDS ORGANIC COMPOST.
3. 3-POUNDS NITROFORM (38-0-0)
4. 1 -POUNDS AMMONIUM SULFATE
3. 2-POUNDS CALCIUM CARBONATE LIMESTONE
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SIGNAL . I
RISER . . i WATER I
ITEL. VALVE I
JBOX
ANTI -DESICCANT:
"WILT -PROOF," 48 HOURS PRIOR TO SHIPMENT TO SITE FROM JUNE 1 THROUGH SEPTEMBER.
R PLANT5 PRIOR TO DELIVERY. PLANT MATERIAL DELIVERED TO SITE
TO BE KEPT CONTINUALLY MOIST7HROUGH INSTALLATION.�
EXECUTION: .
FINISH GRADES: .
OVE ROCKS AND FOREIGN OBJECTS OVER 2 INCHES DIAMETER FROM TOP
D LANDSCAPE AREAS. FINISH ELEVATIONS TO BE DEFINED AS 3 INCHES
BELOW CURBS, WALKS AND/OR OTHER ADJACENT HARDSCAPE FOR ALL PLANTING BED AREAS.
FINISH GRADE REFER TO GRADES PRIOR TO INSTALLATION OF MULCH. ALL FINISH GRADES TO BE
SMOOTH EVEN GRADES, LIGHTLY COMPACTED. PROVIDE POSITIVE DRAINAGE AWAY FROM BUILDINGS.
SEE SITE CIVIL DRAWINGS IDENTIFY FINAL ELEVATIONS.
TREES AND SHRUBS:
SHRUBS ON SITE IN PROPOSED LOCATIONS PER DRAWINGS. EXCAVATE PIT,
, AS CALLED OUT AND DETAILED. ALL TREES, SHRUBS, AND SUPPORTS
TO STAND VERTICAL. BACKFILL SHALL BE PIT SPOILS. SETTLE BACKFILL USING WATER ONLY. NO
MECHANICAL COMPACTION.
GROUNDCOVERS:
*
EXCAVATE PITS TO A MINIMUM OF 3 INCHES BELOW, AND TWICE THE ROOT BALL
DIAMETER. WATER THOROUGHLY AND TAKE CARE TO ENSURE THAT ROOT CROWN IS AT
PROPER GRADE, AS DETAILED.
MULCH:
MULCH ALL LANDSCAPE AREAS. APPLY SUFFICIENT QUANTITY TO PROVIDE A 2-INCH DEPTH.
UTILITY CLEARANCES:
FIELD ADJUST PLANT LOCATIONS FOR 8-FOOT SEPARATION OF TREES/SHRUBS AND 2-FOOT �
SEPARATION FOR GROUNDCOVER FROM FIRE HYDRANTS AND UTILITY VAULTS.
PLANTING MAINTENANCE:
CONTRACTOR TO MAINTAIN PLANTINGS THROUGH COMPLETED INSTALLATION, AND UNTIL
CAPE INSTALLATION. PLANTING MAINTENANCE TO INCLUDE WATERING,
WEEDING, CULTIVATING, TIGHTENING AND REPAIRING OF TREE GUYS, RESETTING PLANTS TO
OSITION, AND RE-ESTABLISHING SE17LED GRADES. HERBICIDE IS NOT
RECOMMENDED FOR ONE YEAR FOLLOWING LANDSCAPE INSTALLATION. INCLUDED IS _c
*'\ I A
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STATE
WASHIIN , N
REGIS,
LANDSC NDeA RCHITECT
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* ' AR R SEIDEL
CERthl'NO. 706
(VALID ONLY WITH SIGNATURE)
EXPIRES: 12/15/14
I . 11
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I A
LANDSCAPE PLANT MATERIAL LEGEND - . .
.
SIZE
SYMBOL BOTANICAL / COMMON N�MES CONDITION SPACING QUANTITY REMARKS
.
TREES:
alo"� CARPINUS BETULUS 'FASTIGIATA! / 1.5m CAL STAKE & GUY ONE GROWING
COLUMNAR EUROPEAN HORNBEAN B & B SEASON; NURSERY GROWN
u (2 ARE REPLACEMENT TREES) FOR STREET TREE USE,
BRANCHED AT 4'
4�� CHAMAECYPARIS NOOTKATENSIS 'GREEN ARROW' / 6' HL MIN. ASSHOWN 6
GREEN ARROW NOOTKA CYPRESS 8 & B . SEASON; NURSERY GROWN,
W\ (3 ARE REPLACEMENT TREES) I � BRANCHED AT 4, UN -CUT
LEADER
EXISTING TREE 6' - 7' HT. AS SHOWN 5 TO BE REMOVED
0 8 & B .
SHRUBS:
.
HYDRANGEA MACROPHYLLA 'NIKKO' / 18" - 21" 4' O.C. 17 FULL AND BUSHY
0
.
MAHONIA AQUIFOUUM . / 21" - 24" 4ff O.C. 17 3 CANES MINIMUM
* . .
�
ArL^ TO REMAIN, SAVE, AND PROTECT
w
.
.
PLAN BY TOBIASON AND COMPANY, INC.,
DATED 04/29/08, CITY #2OD8-0352 .
I
�
I � - ,-- I
, -
GROUNDCOVERS: - , 11 I .;l . I .
I .
- -
-
ARCTOSTAPHYLOS UVA-URSI / 4* POT 12" O.C. AS REQ'D HOLD 16* FROM BORDERS,
KINNIKINNICK . SHRUBS, AND TREES
.
.
- -0-111111-
. .
I
___
CITY OF EDMONDS
BUILDING DEPARTMENT
WORK F154.66 - - - .
ADDRESS 7-0-7 5 _I 7& 7+ Aj/,�- LJ
-
OWNER t41LLoWb,4L6- -
APPROVED DATE: 1.7,-q-13 . .
BLDG. OFFICIAL (I - ...2,d -
- I - -
'90 z-o/3-03,3/
__
2" MULCH LAYER -
FEATHER EXCESS -
SOIL UNDER MULCH
1 " MULCH AT CROWN
1" ABOVE GRADE
E GRADE NO. 1, SIZED IN ACCORDANCE WITH (AAN) AMERICAN
6. 2-POUNDS DOLOMITE LIMESTUNt
Ktt'LAUtMtNI U� UtAU
t-LANIZ) AND t'LANlt, SHOWING LOSS OF 40
PERCENT OR MORE OF
. . . _. .. . . .
. . .. . . .
. .,.( . . . & . . . & .
ERY STOCK (ANSI Z60.1-1996). PRUNE PLANTS RECEIVED FROM THE
E) TOPSOIL PREPARATION AND INSTALLATION:
1. VERIFY SUBGRADES TO -7 INCHES IN LANDSCAPE AREAS BELOW FINISH ELEVATION,
CANOPY.
. . ,
. *.. - \_ O .. .. .
..... .
.1 . PLANTING ** ' '
UTHORIZATION BY THE LANDSCAPE ARCHITECT. "B & B" INDICATES
BALLED AND BURLAPPED; "CONT." INDICATES CONTAINER; "BR" INDICATES BARE ROOT; "CAL"
OR AS INDICATED ON PLANS. THIS ACCOMMODATES, TOPSOIL, AMENDMENTS, AND MULCH.
2. ERADICATE ANY SURFACE VEGETATION ROOTED IN THE SUB -GRADE PRIOR TO SUB -GRADE
81-018 O.C.
- ,
.
INT. EXT.
'
.
BED '- . . .. ... . . . ..
. . . ... . . .. .
:
INDICATES CALIPER AT 6" ABOVE SOIL LINE; "GAL" INDICATES GALLON.
PREPARATION.
�
SIDE SIDE
. . . .
NOTE: . : . .. 0 . .
A) SPECIFIED PLANT CANOPY SIZE OR CALIPER IS THE MINIMUM ACCEPTABLE CONTAINER
3. THOROUGHLY SCARIFY AND RIP ALL LANDSCAPE SUB -GRADES WHICH HAVE BECOME
,-PLUMB
REMOVE CONTAINER AND WORK
OR BALL SIZE AND ESTABLISHES MINIMUM PLANT CONDITION TO BE PROVIDED.
COMPACTED TO A DEPTH OF 12 INCHES WITH MULTIPLE PASSES, 90 DEGREES TO EACH
I 11 It 11 11
- 2x6 CEDAR RAIL CAP
- I
-
, ROOTS FREE OF SOIL.
B) QUALITY:
OTHER. SCARIFY AREAS INACCESSIBLE TO MECHANIZED EQUIPMENT AND AROUND
I I 1"%�_ - I , I -_ I , I -
(8d @ 2' O.C.)
;
BACKFILL TO BE SETTLED USING WATER ONLY.
PLANT MATERIAL TO COMPLY WITH STATE AND FEDERAL LAWS FOR DISEASE
EXISTING PLANTINGS NOTED TO REMAIN WITH HAND TOOLS.
'- -----2x6
LAYER INSTALLATION.
INSPECTION, PLANTS TO BE FULLY LIVE, VIGOROUS, WELL FORMED, WITH WELL
4. REMOVE SOIL LUMPS, ROCK, VEGETATION AND/OR DEBRIS LARGER THAN 2 INCHES
CEDAR TOP RAIL,
DEVELOPED FIBROUS ROOT SYSTEMS. ROOT BALLS OF PLANTS TO BE SOLID
FROM ALL SUB -GRADE PRIOR TO PLACEMENTOF SPECIFIED TOPSOIL.
CUP SIDE DOWN, WITH
FENCE
GROUNDCOVER PLANTING DETAIL
AND FIRMLY HELD TOGETHER, SECURELY CONTAINED AND PROTECTED FROM INJURY
5. REMOVE ANY ASPHALT EXTENDING BEYOND 6 INCHES FROM CURBS INTO ADJACENT
CLIP
NOT TO SCALE
AND DESICCATION. PLANTS DETERMINED BY LANDSCAPE ARCHITECT TO HAVE BEEN LANDSCAPE AREAS. 14 CEDAR PICKETS ROUGH
DAMAGED; HAVE DEFORMITIES OF STEM, BRANCHES, OR ROOTS; LACK SYMMETRY,
. F) TOPSOIL PLACEMENT:
SAWN WITH 1/4" AIRSPACE
.
HAVE MULTIPLE LEADERS OR "Y" CROTCHES LESS THAN 30 DEGREES IN TREES, OR
1. PROVIDE A TOTAL FINISH COURSE OF 4 INCHES OF TOPSOIL FOR LANDSCAPE AREAS.
(2) EQUALLY TRIMMED FILLER
.
DO NOT MEET SIZE OR ANSI STANDARDS WILL BE REJECTED. PLANT MATERIAL TO BE
2. IN ALL LANDSCAPE AREAS, PLACE 2 INCHES OF TOPSOIL MIX WITH AMENDMENTS OVER
�e .0111_
PICKETS ABUTTING POSTS
.
FROM A SINGLE NURSERY SOURCE FOR EACH SPECIFIED SPECIES/HYBRID. NURSERY
HLY ROTOTILL WITH MULTIPLE PASSES INTO
EXISTING 44 POST TO REMAIN AS
_m
SOURCES TO BE THOSE LOCATED IN THE SAME REGION AS THE JOB SITE.
THE TOP 6 INCHES OF SUB -GRADE FOR A TOTAL DEPTH OF 8 INCHES IN LANDSCAPE
c I :)
C) SUBSTITUTION:
. AREAS. PLACE AN ADDITIONAL 2 INCH LIFT OF TOPSOIL, IN ALL LANDSCAPE AREAS,
EMSTING 2by TO REMAIN ,
-co
�
* . .
NO SUBSTITUTION OF PLANT MATERIAL, -SPECIES OR VARIETY, WILL BE PERMITTED
FOR THE FINAL TOPSOIL DEPTH OF 4 INCHES IN LANDSCAPE AREAS.
___--,
UNLESS WRITTEN EVIDENCE IS SUBMITTED TO THE OWNER FROM TWO QUALIFIED PLANT
13. PLACE ADDITIONAL TOPSOIL AND SOIL MIX AS REQUIRED TO MEET FINISH ELEVATIONS.
I _,___�_
.4
TREADED POST @ 8'-O" SPACING
,6" 1
S. SUBSTITUTIONS WHICH ARE PERMITTED TO BE IN WRITING
,
-2x6 CEDAR B01TOM RAIL I 1
__�,�
2" MULCH LAYER
.
FROM THE OWNER AND LANDSCAPE ARCHITECT. THE SPECIFIED SIZE, SPECIES AND
BARK MULCH (TOPDRESSING):
/
BOTH SIDES WITH FENCE CLIP
-
NEAREST VARIETY, AS APPROVED, TO BE FURNISHED. SUBSTITUTIONS MAY REQUIRE
ONE -HALF -INCH (1/2") SIZE, TO ONE -QUARTER (1/4"), I.E., "FINE," HEMLOCK/FIR BARK.
x , x
�l/
I
SUBMITTAL TO REVISED LANDSCAPE PLAN TO CITY FOR APPROVAL. .
ill -11 I-
`ul
- -FINISH GRADE - 4" Q
_11
177-1
. 174,--,r .J%
1 " MAX. TOP OF
�
I
STAKES:
I
I-111-
...
.. 1. :. - A
/
SOIL PREPARATION.
2-INCH DIAMETER BY 8-FOOT MINIMUM LODGEPOLE PINE STAKES.
CONCRETE FOOTING
C)
__�_ i .-I A -1
,
- '':
MULCH
TOPSOIL, AMENDMENT, AND BACKFILL, ARE GENERAL REQUIREMENTS FOR ALL LANDSCAPE
T�PICAL
1,
- .1 I 4. 04
. . . . . %
AREAS, UNLESS NOTED OTHERWISE ON THE PLANS. SOIL AMENDMENTS AND FERTILIZER NOTED
GUY MATERIAL: .
NOTE:
1: � A I *
t *r
-1 I 5 .. . n CURB
, <
FOR BID PRICE BASIS ONLY. SPECIFIC AMENDMENTS AND
1-INCH WIDE POLYETHYLENE CHAIN LOCK TYPE TIES; OR, 3/8" DIAMETER RUBBER. NO WIRE.
TREAT WITH CLEAR PRESERVING
..
..I �l - -4
,
- 4 "
:: "-
E MADE AFTER SOIL SAMPLES ARE LABORATORY TESTED BY THE I
STAIN UPON COMPLETION
OF 3* COMPACTED GRAVEL LAYER
So -1
n-
ma,ri,ft I Ill
, I 1>lsl
wl� �K� I
- 1. . .- .
" 11 I I .__
- . I * .
CONTRACTOR. PROVIDE CHANGE ORDER FOR ADDITIONAL OR REDUCTION OF MATERIALS
HERBICIDE:
ERECTION.
. . .<
. .
.. . .
REQUIRED OR NOT REQUIRED BY THE SOILS REPORT.
HERBICIDE IS NOT RECOMMENDED FOR THE FIRST YEAR AFTER INSTALLATION.
ALL FASTENERS TO BE
EXISTING RErAINING WALL TO REMAIN
- -
I . .<. . . . .. ... <
. 4 .
�l
.
.
GALV. STEEL.
A .
�l I
WOOD FENCE
DETAIL
.
MULCH AT CURB DETAIL
NOT TO SCALE
I
NOT TO SCALE
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PLACE IN VERT. POSITION: DOUBLE LEADERS WILL BE REJECTED
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UNIT "B"
EXISTING FENCE POST IN WALL
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TOP WOOD FENCE
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WALL 436.85
440.
436.62--
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435.81
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z
TOP OF WOOD
FENCE = 446.27
TOP 2X12
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TOP WALL
WALL 440.10
TOP OF WOOD
FENCE 446.27
TOP 2X12
STRINGER 440.60
TOP WALL
WALL 440.10
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26-72-0 - 76rq-h ft, �)
FULL DRAINAGE REPORT
WILLOWDALE TOWNHOMES
CITY OF EDMONDS9 WA
Preparedfor:
Murphy Buffling Comps
6203 202�d Street SW
Lynnwood, WA 98036
Phone (425)-775-3388
Attention: Bob Murphy
-4,0374
o, . '-0—
ate. -�� VISIOM
-ro V6 c
Prepared hy:
FLURY-WYP-ICK &ASSOCIATES, INC.
3409 McDougall Avenue, Suite 102
Everett, WA 98201
425-259-0964
Revised
April 23, 2009
SECTION I - PROJECT OVERVIEW
TABLE OF CONTENTS
SECTIONI - PROJECT OVERVIEW .............................................................................................................................. 3
EXISTINGSITE CONDITIONS ....................................................................................................................................... 3
PROPOSEDSITE CONDMONS ..................................................................................................................................... 3
SECTION 2 - CONDITIONS AND REQUIREMENTS SUMMARY .............................................................................. 5
SECTION3 - OFFSITE ANALYSIS ........................................................................................................................ 6
.................................................................................................................................. 6
UPSTREAM ANALYSIS ................
DOWNSTREAMANALYSIS ........................................................................................................................................... 6
SECTION 4 - FLOW CONTROL AND WATER QUALITY FACILITY ANALYSIS AND DESIGN ........................ 16
SITEHYDROLOGY (PARTS A& B) .............................................................................................................................. 16
PARTA - EXISTING SITE HYDROLOGY ................................................................................................................ 16
PARTB - DEVELOPED SITE HYDROLOGY ........................................................................................................... 16
WATERQUALITY ........................................................................................................................... ...... ...... ......... 19
SECTION5 — TESC ANALYSIS AND DESIGN ............................................................................................................ 23
SECTION 6 — MAINTENANCE AND OPERATIONS MANUAL ................................................................................. 24
APPENDIXA — CONVEYANCE CALCULATIONS ..................................................................................................... 30
TABLE OF FIGURES
FIGURE1 — VICINITY MAP ............................................................................................................................................ 4
7
FIGURE2 — SITE PHOTO #1 ...........................................................................................................................................
FIGURE3 — SITE PHOTO #2 ........................................................................................................................................... 8
FIGURE4 — SITE PHOTO #3 ......................................................................... . ................................................................ 9
FIGURE5 — SITE PHOTO #4 ..................................................................................................................................... ...
10
11
FIGURE6 — SITE PHOTO #5 ........................................................................... . ........................................................ ...
FIGURE7 — DOWNSTREAM BASIN MAP..* .................................................................................................................
12
FIGURE8 —BASIN MAP .................................................................................................................................................
13
FIGURE9 — EXISTING CONDITIONS ..........................................................................................................................
14
FIGURE10 — SOILS MAP ...............................................................................................................................................
15
22
FIGURE11 — DEVELOPED CONDITIONS ...................................................................................................................
Full Drainage Report Page 2
Willowdale Townhomes May 2008
. I i \
SECTION I - PROJECT OVERVIEW
SECTTON 1 - PROJECT OVERVIIEW
EXISTING SITE CONDITIONS
The project site is developed with an unoccupied professional building and associated parking. The
perimeter of the site is ringed with ornamental trees and landscaping. The site slopes to the onsite storm
drainage conveyance system which drains to the east to 76th Avenue W. The project lies to the west of the
intersection of 76th Avenue W and 208th Street SW. The site address is 20628 76th Avenue W. The
intersection of 76th Avenue and 208th Street SW is signalized with the existing commercial driveway
(south entrance) to the site forming the west leg of the intersection. The site frontage on 76h Avenue W
is currently improved with an approximately 22' wide travel lane, curb, gutter and sidewalk. The
northernmost entrance to the site will be removed with the development of the site.
The site is located at a high point on 76h Avenue. The topography trends to the south and east toward
Hall Creek which Res east of SR99.
The on -site soils are Alderwood Urban Land Complex.
PROPOSED SITE CONDITIONS
The site will be developed for the construction of attached multi -family housing. Four separate buildings
are proposed with a common drive aisle and a hammerhead turnaround. Sanitary sewer and potable water
will be extended into the site from City of Lynnwood facilities located in 76th Avenue W. Stormwater
detention will be provided by two hydraulically connected stormwater detention vaults design in
accordance with Edmonds Municipal Code requirements and guidelines found in the 1992 Department of
Ecology Stormwater Management Manual for the Puget Sound Basin.
The project qualifies as redevelopment as defined by the Edmonds Municipal Code. EMC 18.03.060A
states that "any new development or redevelopment with more than 2,000 square feet of new impervious
surfacing shall be required to provide storm water quality controls." Permanent water quality measures
for stormwater runoff from pollution -generating impervious surfaces will be incorporated into the site
design with the provision of two Stormfilter filtration systems provided by Contech St6rmwater Solutions
Inc.
EMC 18.30.060(l)(a) states that "all development sites less than one acre that discharge directly or
indirectly to a stream shall be required to limit the peak rate of runoff to the predeveloped condition two-
year, 24-hour design storm, while maintaining the predevelopment condition peak runoff rate for the 10-
year, 24-hour and 100-year, 24-hour storms. The proposed stonnwater vaults have been designed to
meet this standard. EMC 18.30.060(l) defines the predevelopment site conditions: the predevelopment
condition for all cases other than open water bodies shall be considered meadows or young second growth
forest. Second growth forest was utilized for this site. A summary of the Minimum Requirements can be
found in Section 2 of this report.
FuH Drainage Report Page 3
Wfflowdale Townhomes May 2008
SECTION 1 - PROJECT OVERVIEW
HGU" 1 — VICEVM MAP
kL
MEN
I
IS
0
M
M
M m
M
now mmmm
"rommm
= IM
on
ME
Nil
PAIE,ll"immm
Full Drainage Report
Willowdale Townhomes
11 m
wallWE
m
111mm
IN
zl�elHbi svv
VICINITY MAP
SCALE 1"=1000'
Page 4
May 2008
SECTION 2 - CONDITIONS & REQUIREMENTS
SECTION 2 - CONDITIONS AND REQUIREMENTS SUMMARY
STORMWATER DETENTION: Two hydraulically connected underground detention vaults win
mitigate for increased in storniwater runoff. These facilities win limit the developed flow rates to
50% of the predeveloped 2-year flow rate and will match the 10- and 100-year predeveloped flow
rates.
PRESERVATION OF NATURAL DRAINAGE SYSTEMS: The proposed point of discharge is
to the existing conveyance system located in 76h Avenue W. The site currently drains to this
system.
SOURCE CONTROL OF POLLUTION: Permanent water quality measures have been
incorporated into the site design. Volume 4 Page 1-6 of the Ecology Manual states that source
control BMP's are not required for parking lots with less than 20 stalls. Residents of the proposed
development will park in garages.
IV. RUNOFF TREATAMNT BMPS: Permanent water quality measures for storinwater runoff from
pollution -generating impervious surfaces will be incorporated into the site design with the
provision of two Stornifilter filtration systems provided by Contech Stormwater Solutions Inc.
V. WETLANDS: There are no critical areas on or adjacent to the site.
V1. WATER QUALITY SENSITIVE AREAS: Staff did not indicate at the preapplication. meeting
for the project that the site lies within a water quality sensitive area.
via. OFFSITE ANALYSIS AND MITIGATION: An offsite analysis is included in Section 3 of the
report.
vin. BASIN PLANNING: The applicant is not proposing to develop or utilize a specific basin plan.
ix. OPERATION AND MAINTENANCE: An Operations and Maintenance Manual is provided in
Section 6 of this report
X. FINANCIAL LIABILITY: Maintenance or performance bonds will be submitted prior to permit
issuance.
FnH Drainage Report Page 5
Willowdale Townhoines Aby 2008
I k
SECTION 3 - OFFSITE ANALYSIS
SECTION 3 - OFTSITE ANALYSIS
UPSTREAM ANALYSIS
The site sits on a high point relative to adjacent properties. Single family residential homes to the west are
lower in elevation. The site is bordered to the north and south by apartment complexes that slope toward
the existing conveyance system located in 76th Avenue W. Given the site conditions and surrounding
topography upstream flows are nonexistent or negligible.
DOWNSTREAM ANALYSIS
Storinwater runoff from the site flows to the east to 760' Avenue W to the existing storm drainage
conveyance system located in the right of way. The site is currently developed and the onsite storm
drainage system consists of a series of catch basins and storm drainage pipes that convey runoff along the
south side of the site to a storm drain manhole localed east of the centerline of 76th Avenue W. At the
time of the field survey of the site the storm drain tranhole was full of water and the outgoing pipe invert
was not identifiable. The area slopes down to the vest along 208fl' Street SW, so it assumed that the
conveyance system located in 208'h Street SW is the downstream drainage course for the project. 208 th
Street SW has a piped conveyance system that drains to the west toward Hall Creek to a point that is
greater than 1/4 mile downstream from the proposed point of discharge. There were no apparent signs of
scouring, flooding or sediment buildup in the downstream system. Given the level of detention proposed
and the assumption of a forested predevelopment land cover the downstream system should be adequate
to continue to receive runoff from the site.
FuH Drainage Report Page 6
WiHowdale Townhomes May 2008
SECTION 3 - OFFSITE ANALYSIS
FIGURE 2 — SrrE PHOTO #1
EXISTING SITE PARKING LOT AND LANDSCAPE PLANTERS
�. p
Full Drainage Report Page 7
Willowdale Townhomes May 2008
SECTION 3 - OFFSITE ANALYSIS
NGUIM 3 — SITE PHOTO #2
EXISTING SITE ENTRANCE (SOUTH)
FuH Drainage Report Page 8
--4 Wiflowdale Townhomes May 2008
m
SECTION 3 - OFFSITE ANALYSIS
EXISTING STORM DRAIN AND SANITARY SEWER SYSTEM AT THE INTERSECTION OF 76m
AVE W AND 209TH ST SW
Page 9
FuH Dramage Report
Wiflowdale Townhomes May 2008
SECTION 3 - OFFSITE ANALYSIS
RGURE 5 — SITE PHOTO #4
PROPOSED POINT OF DISCHARGE AT THE INTERSECTION OF 76TH AVENUE W AND 208TH ST
Sw
FuH Drainage Report Page 10
WiHowdale Townhomes May 2008
SECTION 3 - OFFSITE ANALYSIS
FIGUM 6 — SITE PHOTO #5
EXISTING BUILDING ON -SITE, TO BE REMOVED
Full Drainage Report Page 11
Willowdale Townhomes May 2008
SECTION 3 - OFFSITE ANALYSIS
RGURE 7 — DOWNSTREAM BASIN MAP
Full Drainage Report Page 12
Willowdale, Townhomes May 2008
SECTION 3 - OFFSITE ANALYSIS
InGURE 8 —BASIN MAP
I Page 13
Full Drainage Report
Willowdale Townhomes May 2008
F"
a 10 20 40
A PORTION OF THE SE 114 OF SEC 19, T27N, R4E, WM
206th st s. w.
"T
- - - - - - - - - - - - - - - -
— — — — — — — — — — — — —
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"P — — — — — — — — — — — 208th St 5, V1
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CALL FOR
UTILITY LOCATES
TWO BUSINESS DAYS
BEFORE
YOU DIG
1-800-424-5555
TOPOGRAPHIC AND BOUNDARY
SURVEY PREPARED
BY TIE 'EST GROUP ' INC
2120 HEWITT AVENUE
EVERET'T. WA
APPLICANT/OWNER
MURPHY BUILDING COMPANY
6203 202�d STRE T SW
LYNNWOOD. WASHINGTON q8a36
425.775.13188
ATTENTION: BOB MURPHY
AA
FLURY-AYRICK
& AMOCIATES. wc.
ENG� PLANNING - SUFNEVING
34M MCDlQM A— TOO
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SECTION 3 - OFFSITE ANALYSIS
FIGURE 10 — SOELS MAP
I
5 — Alderwood Urban Land Complex, 2-8 percent slopes
Source: NRCS — National Resources Conservation Service
Full Drainage Report Page 15
Willowdale Townhomes May 2008
SECTION 4 - FLOW CONTROL AND WATER QUALITY DESIGN
SECTION 4 - FLOW CONTROL AND WATER QUALITY FACILITY ANALYSIS AND DESIGN
SITE HYDROLOGY (PARTS A & B)
PART A - EXISTING SITE HYDROLOGY
The existing site is developed. The predeveloped land cover was modeled using 2nd growth forested and hydrologic
soil group C.
PART B - DEVELOPED SITE HYDROLOGY
The new proposed drainage system will collect surface runoff in a series of catch basins and carry water via
underground pipes to the onsite detention and water quality facility. ne site area is 0.95 acres and the total of
proposed impervious surfacing is 0.75 acres, with the balance of the site in the developed condition devoted to
landscaping areas.
Precipitation Depths
6 nio = 1.01"
2 yr = 1.50"
10 yr = 2.40"
100 yr = 3.50"
Existing Event Summary:
BasinID
Peak Q
(cfs)
EAging
0.02
ExMing
0.06
Ddgfin
0.13
Drainage Area: Existing
Hyd Method: SBUH Hyd
Peak Factor: 484.00
Storm Dur: 24.00 hrs
Area
Pervious 0.9500 ac
Impervious 0.0000 ac
Total 0.9500 ac
Supporting Data:
Pervious CN Data:
2nd Growth Forested
Pervious TC Data:
Flow qW: Description:
Sheet None Entered
Full Drainage Report
Willowdale Townhomes
Peak T
Peak Vol
Area
Method
Raint3rpe
Event
(hrs)
(ac-ft)
ac
/Loss
17.00
0.0249
0.95
SBLTWSCS
TYPEIA
2 yr
10.00
0.0690
0.95
SBUH/SCS
TYTEIA
10 yr
9.17
0.1352
0.95
SBUMSCS
TYPEIA
100 yr
Loss Method: SCS CN Number
SCS Abs:
0.20
Intv:
10.00 min
CN
TC
81.00
2.19 hrs
0.00
0.00 hrs
81.00
0.9500 ac
Length:
Slope: Coeff: Travel Time
300.00 ft
0.50% 0.4000 131.51 min
Page 16
May 2008
SECTION 4 - FLOW CONTROL AND WATER QUALITY DESIGN
Developed Event Summary:
Basin1D Peak Q
Peak T
(ds)
(hrs)
Developed 0.26
8.00
Developed 0.45
8.00
Developed 0.70
8.00
Drainage Area: Developed
Hyd Method: SBUH Hyd
Peak Factor: 484.00
Storm Dur: 24.00 hrs
Area
CN
Pervious 0.2000 ac
86.00
Impervious 0.7500 ac
98.00
Total 0.9500 ac
Supporting Data:
Pervious CN Data:
Pervious
86.00
Impervious CN Data:
Impervious
98.00
Pervious TC Data:
Flow 1�rpe: Description:
Fixed None Entered
Impervious TC Data:
Flow t3rpe: Description:
Fixed None Entered
Peak Vol
Area
Method
Raintype
Event
(ac-ft)
ac
/Loss
0.0882
0.95
SBLTWSCS
TYPEIA
2 yr
0.1551
0.95
SBUIVSCS
TYPEIA
10 yr
0.2391
0.95
SBUIVSCS
TYPEIA
100 yr
Loss Method: SCS CN Number
SCS Abs: 0.20
Intv: 10.00 min
TC
0.08 hrs
0.08 hrs
0.2000 ac
0.7500 ac
Length:
Slope:
Coeff.
Travel Time
0.00 ft
0.00%
5.0000
5.00 min
Length:
Slope:
Coeff-
Travel Time
0.00 ft
0.00%
5.0000
5.00 min
Control Structure Elk D-001 - Multiple Orifice Structure
Descrip: Multiple Orifice
S
Max El Increment
(12L.8000�ft)
437.7000 ft 0.10
Orif Coeff-
0.62
Bottom El:
431.80 ft
Lowest Diam:
0.4688 in (- Use 5/8" orifice per COE minimum orifice size requirements.
out to 2nd:
2.5300 ft
Diam:
1.4648 in
2nd to 3rd:
0.6200 ft
Diam:
1.6992 in
Node ED: Design Vault
Desc:
Manhole structure
Start El:
433.7990 ft
Max El:
437.7000 ft
Contrib Basin:
Contrib Hyd:
Stage
Area Volume
Volume
433.80
1310.00 0.00 cf
0.0000 acft
437.70
1310.00 5110.31 cf
0. 1173 acft
Full Drainage Report Page 17
Willowdale Townhomes May 2008
A PORTION OF THE SE 1/4 OF SEC 19. T27N, R4E, WM
MUF"),�AM
6203 21
LYMNWO
425.771333111
ATTENTION:
900 MURFRY
PVI STA:
D4 75.00
PVI STA:
1.25.00
IM STA:2+10.00
PM STA.'2
75-00
PVI BE
t 439.43
PVI ELElt440.80
-M El".440.09
PVI ELV
� 440.58
MGM Pi S
MG14 PT E
k-O+ftOO
fV'. 439.70
ROOM PT S"A.1.29.
MOM ,T EM.
54
440.73
LON
PT STA:2+09 99
FIT E".440.131
LOW PT VA.
LOW PT EL
2+6100
'V`. 440.506
.
lu.85
_LVr.:!0.00_
9:130
LVCj!0.00_.
K:1136
-LvC 20.00
K:19.98
LVC:10.00-
A
fi
I I.RA.01
J-1
ISMG GROM
Awl,
n
-
- ---------------
44D
Is
'i
#
STANDARD GRAT
-2.10.00, 0�00
STA.
12 0-1
RIM:440,13
38 LF 1,
SD
6
IE OUT., 437. 06
12. SO N
L=2,�
S*j .01
X
*
I
V.ALLT I -
— -.. —
—
-
VA.
SMEESHM
V"T Im
FALILT RIM ELEVAIION
27 LF 12' SO
7-' LF
4-42
4U42
92 LF 18"
iD S-M402
F.
F
OP OF
4'-GAS
32.% TOP OF
.
A
82 LF IS' SD
S-0-40i
50 LF
40%
i Ali
4M
77
5�s T
1 5� SiM
ST
ST
TI.
T D
RIM: 438
7-i-
IN.
E.437 61
-1
E 'Ou
is, INLET
LE=431.95
DO 3
7rPE 2 48'
SOLID
STA: 2.1
Cl IVER
).OD. 5.03R
LEAK TEST I
STORM PFE AS RE�mm
EAST CB
E 2
OB I TYPE I
4tOk 440.�2
tE tNt
SD S
BY OTY OF EDMONDS.
D COW
11111
0 COVER
—, — —
I
L-4
11.1-2,17,
112'
9' SD IN
. irW4VZ
:436,97 -
JE OLT..
QZ27 18- SO E
E IN 433.
10 127 SO IN
E IN-433.70 1 2
l=S7.01,
�IE IN 432.
)8 9- E)aST SO IN I
TO BE REMOVED)
E OUT. 433.70 2
E IN: 434.87 12"1 1:�MXN
(TO REMAIN)
DRIVE�AY
Ar
IE
E Ou
N
SCALE.
�'-20' MW
VOT
2
#,, AJ
q
A
ci
n
D4
DO
0450
DO
2�
00
24150
PROI
I)SED GRAM
S
--------
0
0
------
AAQ
----------
Adn
dsim GROUND
DRIVEWAY
L
L
1 cmr-- 1*-w moo
WILL.- I*-W
CAU
&TU
UTUM
YOU
d
0.
Do
0.50
14
1.17.79
04
DO
0+61.23
APPFWM FM COPOTF&CnM
w U)
0 W
1% OF
IL da-
w 0
Z
go
w
0
z
z
VAL
"JA
r_j
NO. CAR
REV PER OTY
COMMENTS 7/31/08
REV PER C[TY
COMMENTS 9/22/05
-.V.7 12/1-6/08
OUTFALL, 4/16/09
Dimcm
G&
DNAvk
SCALE
FROACTIAN'sat
CAM
MAY1.2m
smoRim
C8
., 14
am
I
I
I
I
Pi
I
SECTION 4 - FLOW CONTROL AND WATER QUALITY DESIGN
Hydrograph ED: out2
Area: 0.9500 ac
Hyd Int:
10.00 min
Base Flow:
Peak Flow: 0.0095 ds
Peak Time:
24.17 hrs
Hyd Vol: 0.0124 acft
Hydrograph IUD: out10
Area: 0.9500 ac
Hyd Int:
10.00 min
Base Flow:
Peak Flow: 0.0562 ds
Peak Time:
18.67 hrs
Hyd Vol: 0.0783 adt
Hydrograph IUD: out100
Area: 0.9500 ac
Hyd Int:
10.00 min
Base Flow:
Peak Flow: 0. 1286 ds
Peak Time:
11.83 hrs
Hyd Vol: 0.1611 acft
RLPCOMPUTE [LP Node] SUMMARY
2 yr Match Q: 0.0091 cfs Peak Out Q: 0.0095 cfs - Peak Stg: 436.32 ft - Active Vol: 3304.68 cf
10 yr Match Q: 0.0569 cfs Peak Out Q: 0.0562 cfs - Peak Stg: 436.94 ft - Active Vol: 4117.57 cf
100 yr Match Q: 0. 1288 cfs Peak Out Q: 0. 1286 cfs - Peak Stg: 437.45 ft - Active -Vol: 0. 1098 acft
The site is 80% impervious, therefore a factor of safety of 40% was applied to the required, volume.
The modeled vault area under "Node ED: Vault" is 935 sf.
935 sf * 1.4 = 1,309 sf.
The total area provided in the vaults is 1,310 sf
A conflicrwas encountered in the 76h Avenue ROW. The vault outfall waskrai's-e-d to 433.90
shown in the updated calculations above. This resulted in a loss of detention volume. A 40% factor
of safety was applied to the area as required, however, the resulting safety factor on the overall 100-
year detention volume is 7% (4,774 cf * 1.07 = 5,109 cf). The control structure design has been
revised to allow the detention system to continue to meet the required release rates for the 2-, 10-,
and 100-year storms as show in the RLPCOMPUTE SUNEWARY above. The total vault volume
provided at the top of the riser is 5,109 cf (1,310 sf * (437.70-433.80)).
I
Full Drainage Report
Willowdale Townhomes
Page 18
May 2008
I
SECTION 4 - FLOW CONTROL AND WATER QUALITY DESIGN
WATER QUALITY
Stornifilter catch basins from Contech Stormwater Solutions will provide water quality for pollution generating
impervious surfaces. Runoff from rooftops will bypass the water quality devices and drain directly to the
conveyance system or detention vaults.
CB 4 Event Summary:
BasinlD Peak Q
(Cfs)
CB 4 0.04
Drainage Area: CB 4
Hyd Method: SBUH Hyd
Peak Factor: 484.00
Storm Dur: 24.00 hrs
Area
Impervious 0. 1800 ac
Total 0. 1800 ac
Supporting Data:
Impervious CN Data:
None Entered
Impervious TC Data:
Flow type: Description:
Fixed None Entered
CB 5 Event Summary:
BasinlD Peak Q
(cfs)
CB 5 0.01
Drainage Area: CB 5
Hyd Method: SBUH Hyd
Peak Factor: 484.00
Storm Dur: 24.00 hrs
Area
Impervious 0.0400 ac
Total 0.0400 ac
Supporting Data:
Impervious CN Data:
None Entered
Impervious TC Data:
Flow type: Description:
Fixed None Entered
Full Drainage Report
Willowdale Townhomes
Peak T
(hrs)
8.00
CN
98.00
98.00
Peak T
(hrs)
8.00
CN
98.00
98.00
Peak Vol Area Method Raintype Event
(ac-ft) ac /Loss
0.0120 0.18 SBUH/SCS TYPEIA 6mo
Loss Method: SCS CN Number
SCS Abs: 0.20
Intv: 10.00 min
TC
0.08 hrs
0. 1800 ac
Length: Slope:
0.00 ft 0.00%
Peak Vol Area
(ac-ft) ac
0.0027 0.04
Coeff- Travel Time
5.0000 5.00 min
Method Raintype Event
/Loss
SBLTH/SCS TYPEIA 6M0
Loss Method: SCS CN Number
SCS Abs: 0.20
Intv: 10.00 min
TC
0.08 hrs
0.0400 ac
Length: Slope: Coeff. Travel Time
0.00 ft 0.00% 5.0000 5.00 min
Page 19
May 2008
E
I SECTION 4 - FLOW CONTROL AND WATER QUALITY DESIGN
Fil
Size and Cost Estimate
ZT=5� �UMNS=.
Prepamd IW Kaftyn Thmawn on ApV 18, 2M
Willowdale Townhomes — Stormwater Treatment System
Edmonds, WA
':Inforrnfffion provided:
* Structure ID =
CB 4
CS 5
- Toted Area (acre)
0 Percent Impervious
0.18
100
0-04
1W
0 Water CRiality Flow, WOF (cfs)
0.04
0.01
0 Peak Flow, 0100 (cfs)
0-14
0.03
Assumptions:
* Media = ZPG cartridges
0 Per Cartidge low rate = 15 gpm
0 Dmp required from RIM to outlet 23 minimum
9 Pmsiding agency = City of Edmonds
a
Size and cost estimates:
The StorniFilter is a flo"ased system, and therelbre, is sized by calculating the water quardy flow We associaled
with Ow design st� The water quality flow rate was celbJeted by the design engffmw using the SBUH nwffmd
and provided tD CONTECH Skmiriwater Solubmis.
structure Water Approximate No. of Estimated
ID Quality Depth Cartridges system size Cost
Flow
CB4 0.04 23 2 Catchbasin $9,700
cB 5 0.01 23 1 Catchbasin $5,500
The estmated costs are Ibr ownplete systems delivered tD Ow job sb. The conbactor is responsftee fbr setting the
SWm*-Hter system and all eAunal plumbing.
402MIS CONTECH SWmwW S&Wrts I M21-9 NE ARW WaY. 1`01110d OR 97220 pap I cc I
ou&KhdwmArjW.cam TbG-ftec aOD-SUA667 Fax 00ME61.1271 TS-P027
FuH Drainage Report Page 20
Willowdale Townhornes May 2008
SECTION 4 - FLOW CONTROL AND WATER QUALITY DESIGN
WATER OUALITY BASIN AREAS
Full Drainage Report Page 21
Willowdale Townhomes May 2008
A PORTION OF THE SE 1/4 OF SEC 19, T27N, R4E, WM APPLICANTIOWNER
MURP Y BUILDING COMPANY
6203 202�d STREET SIN
LYNNVFOOO. WASHINGTCN 98036
425.775.33ag
ATTENTION: 908 MURPHY
7-,
r�4 (Z) F::;' —r F—I
a 10 20 40 .4
... . ... ---
-------------
7
440
r
BLDG 2
"J'
st
7
cl
STORM DRAINAGE CONSTRUCTION NOTES
REMOVE EXISTING 8 " STOW PIPE MOM EXISTING TYPE 2 CATCH BASK STRUCTURE WAS FULL OF
MIER AT TIME OF TOPOWAP111C SURVEY. CONNECT NEW 12' STORM PIPE TO STRUCTLRE. SEE
PROFILE FOR VOTTICA. INFORMATION. VERIFY EXISTING DIVERT.
EXSMC B* STORM PIPE TO BE REMOVED AND REPLACED NTH NEW 12' STORM PIPE
(DDOSnNG CATCH BASIN TO BE REMOVED AND RERACED NTH NEW TYPE I CATCH BASIN. RECONNECT
STORM ME IN FROM NORTH TO NEW STRUCTURE
CATCH BASINS 4 AND 5 ARE STORMIXTER STRUCTURES By CONTECH SToft-TER SOLUTIONS. SEE
SHUT CII FOR DETAILS OF THESE STRUCTURE&
@ CONSTRUCT NEW CONTROL STRUCTURE SEE DETAIL ON SHIXT CIO.
CONSTRUCT DETENTION VAULT AT TWO LOCATIONS SEE SHEET C12 FOR GENERAL INFORIVATOOF1. SEE
STRUCTURE DRAWINGS FOR ALL CONSTRUCTION DETAILS AND INFORMATION. 10- BUILDING SETBACK TO
VAULT IS REQUIRED.
INSTALL YARD GRAIN IN LOW PONT OF GRADNQ CONNECT YARD DRAIN TO DOWN SPOUT DRAIN
SYSTEM.
FNST� 6- PCV PIPE TO "THIN W OF THE BUILDING FOIJNOATICN FOR FOOTING AND ROOF GRAIN
CONNECTION TO STORM GRAIN SYSTEM.
cxsnNr. CATCH BASIN To BE REPLACED.
ROAD CONSTRUCTION NOTES
REPLACE ENSTING DRIVEWAY WITH MEW OUREL GLITTER AND SIDEWALK SAWCUT ExIsT aim GUTTER AND
SIDEWALK AND PAVEMENT BEGINNING AT STA 10+76 18' LT AND ENDING AT STA ti.25 18' LT. REMOVE
EXISTING PAVEMENT SECTION. CURB, GUTTER AND SIDEWALK BETWEEN RIGHT OF WAY AND SAWGUT UNES.
INSTALL NEW CUM CUTTER AND SIDEWALK PER STANDARDS AND SPECIFICATION OF THE CITY OF EDMOND&
AD.JUST My UTILITY BOXES, COVERS AND OR LIDS IN SIDEWALK To NEW nNSH GRADE MAT EXIST SIDEWALK
'w PAVEMENT AT UNITS OF NEW WORK. PAVEMENT SECTION SHALL BE REPLACED PER THE STANDARDS AND
SPECIFICATIONS OF THE OTY OF EDMONDS. SEE STANDARD DETAILS ON SHEET CS.
REPLACE DOSTING DRIVEWAY NTH NEW WULTI-FAMILY ENTRANCE sAwcur E)msmc cuM CUTTER o
SIDEWALK AND PAVEMENT BEGINNING AT STA 9+46 IfF LT AND ENDING AT STA 10+24 ia* LL REMOVE
EXISTING PAVEMENT SECTICM ' CLIFFS, GUTTER AND SIDEWALK BETWEEN FOCHT OF WAY AND S4WOUT UNE&
INSTALL NEW ENTRANCE PER STANDARDS AND SPECIFICATIONS OF Cry OF EDMOND& AOXS` My UT`U`Y
BODIES, COVERS AND OR UDS N SIDEWALK TO NEW FINISH GRADE. ADJJS7 CATCH BASIN GRATES OR SOUG
COVERS TO NEW FINISH GRADE IN PAVEMENT AREAS. MATCH EXIST SIDEWALK AND PAVEMENT A' LIMITS OF NEW
WORK. PAVEMENT SECTION 94ALL BE REPLACED PER THE STANDARDS AND SPECWICAT06 OF THE CITY OF
EDMONDS. SEE STANDARD DETAILS ON SHEET C9.
ama. currER AND SIDEWALK BETWEEN STA 10+24 AND STA 10+76 TO REMAIN.
SAWCUt DOSlINC PAVEMENT TO PROVIDE FOR NEW UTILITY CONSTRUCTION LOCATION OF THE SANcuT SHOWN
ON THE PLAN IS AF`PROXMATE ONLY. THE CONTRACTOR SH RAM THE SAWCUT LOCATION TO PROM E THE
NECESSARY WIDTH TO PERFORM THE UTIUTY CONSTRUCTION PAVEMENT SECTION 94ML BE REPLACED PER IKE
STANDARDS AND SPECIMATIONS OF THE CITY OF EDMONDS. SEE STANDARD DETAILS ON SHEET C9.
NEW AC PAVEMENT SEE TYPICAL DRIVEWAY SECTIONS ON SHEET GEL
INSTALL NEW CM AT LOCATION SHOW ON THE PLAN. SEE CURB DETAIL ON SHEET GEL
FZ] CONSTRUCT NEW CONCRETE SIDEWALK AND WAGE ACCESS AS SHOWN ON THE PLAN SEE SHEET C9 FOR
SIDEWALK SECTION.
CONSTRUCT CONCRETE TRASH ENOU)iURE PAD. SEE ARCHITECTS PLAN FOR DETAILS.
INSTALL NO PARXING-FIRE LANr SIGN
CALL FOR
UTILITY LOCATES
TWO BUSINESS DAYS
BEFORE
YOU DIG
1-800-424-5555
APPROVED FOR CONSTRUCTION
I &ASSOCIATES. INC.
ENGINEERNG� - I'LAHNING - SUFNEW4
3409 McDoko� A� S" IC2
E—. gm,
ft—��Om.
z
W w
(D
<
0
<z z
0
z F-
20
0 z
Q
0 0 =
o z
F-
c/) w
o _j
z z
< 0
(L
z
< w
1 0
(L _j
(_9 -J
z
2 3:
Of
(L
SEAL
L
I CONNES SEPT 17. 2&-M
NC'. REVI5FCIH DATE
GJL
ORA—
GJL
RMF
mBC000l
DATE
MAY 1, 2008
FIG 11
.11
SECTION 5 - TESC SUMMARY
SECTION 5 — TESC ANALYSIS AND DESIGN
Erosion control measures will include silt fences, catch basin inlet protection and ground cover practices. Silt fences
will be placed at the downstream edges of all disturbed areas. The plans include details and notes for the use and
maintenance of catch basin protection and ground cover practices. The wet vaults are to be utilized as sediment
ponds during construction. The vaults shall be cleaned and all sediment removed once the site has been stabilized.
FuH Draimge Report Page 23
Willowdale Townhomes May 2008
I
'I SECTION 6 - MAINTENANCE AND OPERATIONS MANUAL
SECTION 6 — MAINTENANCE AND OPERATIONS MANUAL
No. 3 - CkmW Debition Sysbim (Tw"Vaults)
md"brer"
Cn 1p,
a
Con0lons Whas lildrimno is Headed
Itasuftexpealad.
Whin makdonance Is
P to
Morage Area
Plugged Air Vents
0 na-haff of the crose section of a vent Is
blockedstanypointortheventledernaged.
Vents open and
functioning.
Debris and Sedinnent
Accumulated sediment depth exceeds 10%
d the diameter of to storage wee for *2
length ct storage vault or my point depth
AN sediment and
debria removed tom
storege area.
exceeds IS% d diameter.
(Example: 724tch storage lank would
require deening when sediment reaches
Vh of 7 Inches for mom than 112 length d
It )
Joints Between
TankA31pe Section
An rfte or vokle slowft material to
lostolmpdad Into ilaclffly�
(WIN require engineering aru*sle to
determine stuclural stability).
between
=a sections
Tank Pipe Boot Out
ofShaps
Any part oftank4*0 Is bard out of shape
more then 10% of Its design shape. (Reviewr
Insd by engineer to determine alructural
TankfpIps or
replaced to=gn.
Vault Structure
Includes Cracks In
Walk awn.
Damage to Frame
and/or Top Siab
Cracks wkler then 124nch and any
evidence of soll particles enlerft the
structure 1twough ths, cracks. or
mahmancefinspection parsomel
deterra Inse that the vauli Is not structurally
sound.
Vault replaced or
repalredtDclesign
speellbations mid Is
studurally sound.
Cracks wider than V24rich at to Joint: of any
No cracks more then
Mhft" pipe or any evidence d eoll
Idea entering the vault through the wells.
19-inch wide atthe
Pla ofthe NeUmdet
pipe.
Manhole
Cover Not In Place
COW 19 MIRBIng Or Only Part* In P1309-
Any open, nmnhole requires maintenance.
Mwdx)h Is closed.
Looking Mechanism
NotWbrkkV
Mschan4wn caninot be opened by one
Bob
Irft frame hem lase than 1#2 Inch of 11
Mechanism opens
With proper tools,
(may not apply to self4ocklng lkb�
Cover Dncultbo
Remove
One maintenance person cannot remove Ild
after sloying nomud Filling pressure. Intent
Is to keep cover ftm sealing eff access b
maintenancei
Cover can be
rernoved and
reinirtalled by one
maintenance person,
Ladder RwW Unsafe
Ladder Is unede due to missing rungs,
mlealignnat not securely allachad to
structure wall, rust. or cracke.
Ladder meets design
standards, Alma
mahmance person
I
sale access.
Ca" Basins
SeeCifth Ba&W
I (No. 6)
SeeCstch BadW (No. 6).
1
Ses"Catch BsdW-
(No. 6).
4-34 VbAime V— Rurtdff Tmftod SWS Augu$12WI
Full Drainage Report Page 24
Willowdale Townholnes May 2008
I SECTION 6 - MAINTENANCE AND OPERATIONS MANUAL
INo. 4 - Contol SbudWWFknN Resbk*w
Is
D~
Canditim Men Illial. i � Is Needed
ResultsE4nded
Canpwwd
lbotbeborofteptsta,
GenafW
Trash ard Debris
Qncl�Sedlmenl�l
Material exceeds 25% of sump depth or 1
Control struature
ofte is rot blocked
All Wash and debris
removed
Structure! Damage
Structure Is not asourely attached to
manhole wal
Structure securdy
attsohad to wall and
outlet pipe,
Strudure Is not In uprIght position (allow up
to 10% Mom plurnb�
Structure In owed
pon'"r, 1.
Cwmdbm to oullet pipe we riot watertight
Connections to outlet
and show abna of rust.
=Wdwtbht
repaired or
replooed erW works
as dealaned.
-odw than designed hole& --in the
Structure has no
hobo other then
designed holes.
Clesnotit Gate
Damaged or MWeing
Cleanout ga* Is not watertillM or Is missing.
Ode Is Watedlight
and waft as
designed
Gate cannot be moved up and down by one
maintenance pffson.
Gate moves
down as* i "I,
Watertight,
Chalr*W Isaft to gate Is missing or
damaged.
Chain is In plave and
wcrks as designed.
Gate Is rusted om GM of Its surface 8ML
Gdo Is relmdred or
replooed to most
design standards.
Orifioe Plate
Damaged or Missing
Om"I devIce Is not Wm= = due to
misebra outd plaos.. or Ode.
Plate Is In plaw and
works as desbried.
obstructions
Any bush, debris, sadmait or vegetation
mod" &a Plate,
Philla Is tee Of all
obstrudions and
works as deeigned,
overflow Pipe
obstructions
Any trash or debris bk=Wng (or havirg 11he
potential of blorking) the overflow pipe.
Pipe Isfreed all
obstructions and
works as dee%ped_
Manhole
seavowid
Detention SysterrW
(No. 3).
See 'Closed Detention SysterW (Nb. 3�
See"Closed
Detention Systems7
(NO. 3).
Catch Basin
See T" BwIW
SeeCatch Basins! (No. 6).
SeeCateh SedrW
1
(No. 5).
1
1 (No. 6).
I&Wsf 2001 Volunv V - Rutaff Treafrnerd BWa 4-36
r]
Full Dramage Report Page 25
WiHowdale Townhomes ?&y 2008
SECTION 6 - MAINTENANCE AND OPERATIONS MANUAL
No. 5 - Catch Ba"
Mdaunance
Component
Cmdvcm men Mairimnance Is llended
ftaftExpectedlillhen
pollomod
Gen"
Tlash a
Debtris
Trash or debris which Is bested krn*dat*
In tort d the catch basin 11
blocicing MMtkv =0== by
more then 10%.
W Trash or debris located
=dW :��in front d
be on grate
qxWng.
Trash or ddxb (in lhe basin) that mcceeds 60
percent of#* sump depth as measured from
fie ba0m. of basin to irrvert of the lowest
No trash or debris in lho
catch basin.
Llnb or out of the basin, but In no cam
Wusn a mirknum of six Inches clearance
tun Do debris surface lo the Invert of the
lowest pip.
Trash or debris In any Inlet or oullak pipe
bkmMrg mom tan 113 of b height
Wet and MW POW too
d tresh or debris.
Deacl aninals or vagetation that could
generate oclors #W could cause complaints
or diangarous gases (eg., mWme).
No dead animals or
vageltation present within
the catch basin.
Sediment
Sediment (in do bash) that mcoseds 60
rencent.,*11ne d=s nwmLracl from
he b.M of = of the kwest
No sediment In the catch
basin
=Wdo or out of the bs*, but In no case
than a mo thru, of 6 Inches cleararice
from lhe sedireent surface to the invert of the
bwed pipe.
Structure
Damage
Z.
Top ebb has holes larger ftm 2 scluere
Inches or orade witler than IN Inch
Top stab Is free of holes
erW a -mks.
F.
Top Slab
(Irdent Is to make am no material Is running
inlo ba&O).
Frame not sitting IM on lop stab. Le..
separation of mom than 34 Inch ofthe hams
tanthe top stab. Frame not securely
From Is dftg Sian on
the rim dnx=. dab
WW *m1y
attached
Fraduresor
Cracks In
Basin WaW
Bottom
Mainierance person juclgee that structure Is
unsound.
Basin replaced or repaired
to design standards.
Grout fillet has sepwaled or cracled wider
then 112 inch and longer than 1 foot at to
Pipe Is regmuted ancl
secure at basin wall,
joint ot any intiftullIdgr or any evidence at
soll particles wisring ch basin ftmmh
. a.
Seteeffmw
Misalignment
I failure d besin has created a edety.
function. or design problem.
Basin replaced or repaired
to design standards.
Vegetation
Veg"lon gmvft acrose and blocliftinm
ihan 10% ofthe basin opening.
No vegetation blocking
opening to basin,
��S=lnl,nletk,x.dsl ejoints
in w 8�p
is more a lose then
No vegetation or mat
grow1h present
ebi Inches apart.
I I
446-
Full Dminage Report
Willowdale Townhomes
Vokin)e V— RundY Treatment SAPs August 2W I
Page 26
May 2008
SECTION 6 - MAINTENANCE AND OPERATIONS MANUAL
No. 5 - Catch Basim
waintworwe
COMMON
COldillaw Men Mal Is Obod0d
Rwdl*!bW*dWV*m
Coriterninsdon
See Tetentlon PoW (No. 1).
NO pokillon present.
wW Pbllutbn
Catch Basin
cow
Cover Not In
place
Cam Is miseft or only pmb* In place.
Any open catch basin reWhm maintenance.
Catch basin cam Is
closed
Lacking,.
Mach.
NotWorking
Mechanism cannot be opened by ano
mairtenanoo person wth proper bole. Bots
Into frame how Iwo than la Inch of thread.
Meclumism opens whh
properlocle.
Cvw Officult
to Roman
One mainlansince person cwwM rwrwe fid
after appMV narnal ffling pressure,
Cover can be removW by
am mainterwoo person,
(hent Is keep ower from sealing offecoses
to, maintertance.)
Ledder
Ladder Rungs
Unsafe
Ladder Is uneek due to mloft rungs. riot
securely attached to basin well,
misalignment, ruet cracks, or sharp edges.
Lacklor nvm* design
standards and Whyin
maintenance person safe
scooes.
MOW Grable
(RApplicable)
Grebe opening
Unsafe
Grate wflh opertingwider dun 718 Inch.
-
Grate opoining meats
design standards.
Trash mid
Dolbris
Trash anddebris that Is blocking rocrothan
W% of" surface Inlelft capeft
Grate fte of Imah ond
debris.
Damaged or
Missing.
Grate missing or broken member(s) of the
I grate,
Grate Is In place and
mosts design standards.
No. a - Deb4s Barrkn (e.g., Tnwh Ptacks)
Malintename
C43noonente,
D~
CandtlDnWhanNalNenwools,
Needed
Rwwft E Ft i i Viften,
Molaftname Is Pedbaried
Ger"al
Trash wd
Debris
Trashor debris that k3 pkWInq more
than 20% of tie openings In to befflar.
Border cleared to, design flaw
capacity.
metal
Damage&
Missing
Sam am bart aut of shape more than 3
inches.
Bws=wfth ro berds more
than
Sam.
Sam are missing or entire border
Sam In plaw socofding to desigrL
missing.
Bare am boss and rust Is causing 50%
deterioration to any pod of barrier.
Barrier replaced or repaired to
d*W6t31d91 I
Debris barrier m s*Q or not attached to
Barrier" aftchodtD PIPS
I
P"
August 2001 Valutm V — RundY ftafrwrt BWS 4-37
Full Drainage Report Page 27
Willowdale Townhornes May 2008
I
I SECTION 6 - MAINTENANCE AND OPERATIONS MANUAL
I
INo. 12— Wetwatelts
I
I
I
I
I
I
I
I
I
MaInknow
D~
CamdohnWheollilml
Is N"ded
ResultsEminctedWherl
makarmn"Isputo
General
Tradvoebris
Accumulation
Trash and debris somrnulded
In vaulk pipe or bWWbutW
Pdudes flastables arW norv.-
buladee).
Removebashanddebrieftornvault.
Sediment
Accumulation In
Vault
Sediment accumulation In va uk
exosedathed hdths
6 ,
sedirnent zone plus 4Wr hoe.
Remove sedirnent fmm vault.
Damaged Pipes
=iping clantaged or
In need of repair.
Pipe repaired wWor replaced.
Access Cover
Darsaged,M
Cow amxt be oj)sned or
removed. especially by one
Pipe repaired or replaced to proper
worwrigapecillostions.
Wod"
Peism.
Ventilation
Ventliallon area bkm*W or
Ougged.
BID'" 'ad
ft. V==-A8grd0%
of the vwA =
venigodon t vqr=��
deso opecificaticne).
Vault stucture
=-Craclm
MaintenancefinspecilDn
detaffnine that the
=t stuclurally sound.
Vault replaced or repairs made so
thEdvauft.1 design spedfications
and Is s1ructurally sound.
In Web Boft. .
Damage to Fim,
d& Top sm
an
Cracla wider then 1124nch at
Vault repaked so that no crecle exist
the)*_9 of an pipe
,ginlatkutlet
or evidence soll
entering through crecits.
wider than 144nch at the AM of the
Inlotbutlet pipe.
Baffles
BOM corroding. cracidng,
war dg-
phV showing of
Bdfts repaired or replaced to
specifications.
fe Ilure 8:�� by
pedon staff.
Mom
Darnage,
Ladder Is comodad or
date, km a d, not functioning
property. not eftachad to
alruclure wall, missing runge6
has crecla andfor misaligned.
Conlined space womhg sign
miming.
Ladder replaced or repaired to
spacificallawk and Is ads b use as
dirlarmined by Inspecdon personnel.
Replace, sign warning d confined
space enlry reWirements. Ladder
and er*y notification compke with
I OSHA standardS,
IAuvist 2M Mum V— Runoff TteaWwrd BWs 4-0
I
FuH Dramage Report Page 28
Willowdale Townhomes May 2008
I
SECTION 6 — MAINTENANCE AND OPERATIONS MANUAL
INa 15 - Skanftww (Wcarrocatfitled
I
71
Lj
I
I
I
I
I
I
1111sintena"M
C0111)"
Dew
Undim When ValnWancels
Read* Eqmcbd Men
1111didenum Is Podbomed
BakmGmund
Vault
Sedirnent
Accumulation on
Medlis.
Sediment depth eamescle 026-iriches,
h10 sediment deposits which
would Impede pannsabilkyof
the compost Media
Sediment
AcciuroAdlon In
Sediment depth mweeds 64ndme In Irst
chamber.
No sedhent dM=b,h VOUI
bodan, ofliretchamber.
Vault
TrashfDebrls
Accumulation
Trash and debris aactimulated on
compost fillar bad.
Trash and debris mmved fpom
the compost filter becl,
Sedirrank In
Drein
pipeaclesin-
Whan drain pipes, ciban-outs, become
IsH with eedirnant wKVor debris,
Sadirnert and debris removed.
Outs
Damaged Pipes
an�� or
Z=ft es
ow=
due g
eattlement.
Pipe repaired ancilor replaced.
Access Cover
Damagedmot
Woriling
Covw ewwwt be operad; one person
oannot open the com using normal
rdtlng pressure, ocirrodon/diformstion of
cover.
CAMW 13.a1%d=per
worl" a ne or
fsphwai
vauk strudwe
I noludes Cracim
In V" Bottom,
F=
F Z,
cracim wider 1han I&Inch or evidence
of soll particles entering the dndurs
through the anacle, or
m
mM8'wr6Wr'n% �the wult
Vaultralolacedorrapalvernaft
soffudvault masts design
Weacs"ons and Is structurailly
WWd
Top Slab
sound.
Craft wider 1han V24nch at Me
Wry inletbulko p4m or &VIdence, rwilo,
particles enterh7g *otqh the cram**.
Vaut repaired so that no cruicits
'a
0*
exW wider than 194nch at ft
Joint d the, InlWaMet pipe.
qtD
Befts
Bafte corroding, cracldr q warping
gndfor stowing signs of falkAre as
determined by m@lrftWnGQ4n8P6CfiDn
Befflas ked or replaced t
person.
Access Ladder
Damaged
Ladder Is corroded or deterioi , not
n nol secur*
f&d' d v" mbskV rungs,
Ladder replaced or repaired and
mouts specifications. and Is
safe lo use as determined by
cracits, and mWalig;*d.
inspection pwwnneL
eeicwGround
CartidgeType
Compost Medle
Drawdown ofwatertrough'he
I&W. longer than I hoM Indf, ow
ocrurs*"tently.
Media M"*" mplaced'
Short CkculthV
Rom do not propsrl� enter Iftv
I cartridges,
Fftw cefOldges replaced.
I j
IAugust 2001 Vhbav V — Rw)cff Tfeafftmg SWS 4-47
FuH Drainage Report Page 29
WiHowdale Townhomes May 2008
I
I APPENDIX A - CONVEYANCE CALCULATIONS
IAPPENDIX A — CONVEYANCE CALCULATIONS
I
I
I
I
I
I
j
I
I
I
I
I
I
FuH Drainage Report Page 30
Willowdale Townhomes May 2008
APPENDIX A - CONVEYANCE CALCULATIONS
APPENDIX A — CONVEYANCE CALCULATIONS
Calcutafm Optiom 11 Calchmerd Stffnmafy
11 Conduit S I Node Summary
Inlei Summary
Label
Element Type
Subnetwork
Outfag
Flow (To
surface)
OVA)
(Total
out)
(ft'Is)
Elevation
(G=nd)
(ft)
Eleyanon
(Dwert)
(ft)
Energy Grade
Line (In)
(ft)
77gy wam
Line (out)
(ft)
CB 3 (STORM)
CB 2 (STORM)
CS 4 (STORM)
CS 5 (STORM)
EXIST CB (S
CB I (STORM)
Manhole
Manhole
Manhole
Manhole
Manhole
Manhole
OF-2
OF-3
OF-2
OF-3
OF-3
OF-3
0.31
0.31:
0.42:
0.09:
0.00;
0.00,
0,72:
0.34:
0.42
0.09:
0.00
0.00:
440.321
440.28:
440,13'
438,67:
437.48
436.97:
430.27
428.42:
435.08
434.20;
430.10:
430,23:
437,71:
437.70;
437.71:
437.70
436.97
436.97:
437.71
437.70
437.71
437.70:
436.97
436.97
Full Dramage Report Page 30
Willowdale Townhomes May 2008
APPENDIX A - CONVEYANCE CALCULATIONS
Worksheet for 12-inch Pipe
Project Description
Friction Method Manning Formula
Solve For Full Flow Capacity
Input Data
Roughness coefficient
0.012
Channel Slope
0,00500
ft/ft
Normal Depth
1.00
ft
Diameter
1.00
2.73
ft
ft-/s <— 'J:VLA-
Discharge
Results
Discharge
2.73
ft3/s
Normal Depth
1.00
ft
Flow Area
0.79
fl:2
Wetted Perimeter
3.14
ft
Top Width
0.00
ft
Critical Depth
0.71
ft
Percent Full
100.0
%
Critical Slope
0.00692
ft/ft
Velocity
3.47
ft/s
Velocity Head
0.19
ft
Specific Energy
1.19
ft
Froude Number
0.00
Ma)dmum Discharge
2.94
ft3/s
Discharge Full
2.73
fl:3/s
Slope Full
0.00500
ft/ft
Flow Type SubCritical
GVF Input Data
Downstream Depth
0.00
ft
Length
0.00
ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.00
ft
Profile Description
Profile Headloss
0.00
ft
Average End Depth Over Rise
0.00
%
Normal Depth Over Rise
100.00
%
Bentley Systems, Inc. Haestad Methods Solution Center Bentley FlowMaster [08.01.071.001
413012008 5:34:39 PM 27 Slemons Company Drive Suite 200 W Watertown, CT 06796 USA +1-203-766-1666 Page I of 2
Full Drainage Report Page 31
WiHowdale Townhomes May 2008
APPENDIX A - CONVEYANCE CALCULATIONS
Project Description
Friction Method
Solve For
Input Data
Roughness Coefficient
Channel Slope
Normal Depth
Diameter
Discharge
Results
Discharge
Normal Depth
Flow Area
Wetted Perimeter
Top Width
Critical Depth
Percent Full
Critical Slope
Velocity
Velocity Head
Specific Energy
Froude Number
Ma)dmum Discharge
Discharge Full
Slope Full
Flow Type
GVF Input Data
Downstream Depth
Length
Number Of Steps
GVF Output Data
Upstream Depth
Profile Description
Profile Headloss
Average End Depth Over Rise
Normal Depth Over Rise
Worksheet for 18-inch Pipe
Manning Formula
Full Flow Capacity
SubCritical
0.012
0.00400 ItIft
1.50 ft
1.50 ft
7.20 fV/s iE CAP
7.20 f?/s
1.50 fi:
1.77 ft2
4.71 ft
0.00 ft
1.04 ft
100.0 %
0.00587 fttft
4.07 ft/s
0.26 ft
1.76 ft
0.00
7.74 ft3/s
7.20 ft3/s
0.00400 ft/ft
0.00 ft
0.00 ft
0
0.00 ft
0.00 ft
0.00 %
100.00 %
Bentley Systems, Inc. Haestad Methods Solution Center
Bentley FlowMaster 108.01.071.00]
413012008 5:36M PM 27 Slemons Company Drive Suite 200 W Watertown, CT 06795 USA 0-203-7WIGGS Page 1 of 2
Fuff Drainage Report
Wdlowdale Townhomes
Page 32
May 2008
LEGAL DESCRIPTION:
WILLOWDALE TOWNHOMES MASTER CONDOMINIUM RECORDED UNDER
AUDITOR'S FILE NUMBER 201212195001, RECORDS OF SNOHOMISH
COUNTY, WASHINGTON.
I
BASIS OF BEARINGS:
THE PUBLISHED COORDINATE OF A FOUND MONUMENT AT THE
SOUTHEAST CORNER OF SECTION 19, T27N, R04E, W.M., KNOWN
AS MTLK101, WAS USED TO ESTABLISH NAD83/91 POSITION, AND
A CALCULATED LINE TO A FOUND MONUMENT AT THE NORTHEAST
ION, KNOWN AS SNOHOMISH COUNTY
2704NO5 WAS USED TO ESTABLISH NAD83 ROTATION. BEARING =
NORTH 00*42'55" EAST
VERTICAL DATUM: . . .
NAVD88 ELEVATION IS BASED ON FOUND WSDOT MONUMENT
ELEVATION 414.379'
. I
UTILITY NOTE:
UNDERGROUND UTILITIES ARE SHOWN BY SURFACE OBSERVATIONS AND
MARKINGS PLACED BY AN UNDERGROUND UTILITY LOCATE COMPANY.
EXACT POSITION SHOULD BE VERIFIED BY POTHOLE LOCATION PRIOR TO
ANY MAJOR EXCAVATION.
I
SPECIAL EXCEPTIONS:
1. RESTRICTIONS, CONDITIONS, DEDICATIONS,. NOTES, EASEMENTS AND
PROVISIONS, IF ANY, AS CONTAINED AND/OR DELINEATED ON THE FACE
OF THE PLAT OF WILLOWDALE GARDENS DIVISION NO. 1 RECORDED IN
VOLUME 10 OF PLATS, PAGE 72, IN SNOHOMISH COUNTY, WASHINGTON.
2. EASEMENT, INCLUDING TERMS AND PROVISIONS CONTAINED THEREIN:
RECORDING INFORMATION: AUGUST 7, .1967 UNDER RECORDING NO.
1978007
IN FAVOR OF: PACIFIC NORTHWEST BELL TELEPHONE COMPANY, A
WASHINGTON .
CORPORATION, ITS SUCCESSORS AND ASSIGNS
FOR: TELEPHONE LINES AND RELATED RIGHTS .
AFFECTS: COMMON AREA
.
3. EASEMENT, INCLUDING TERMS AND PROVISIONS CONTAINED THEREIN:
RECORDING INFORMATION: OCTOBER10, 1989 UNDER RECORDING NO.
8910100541 1
IN FAVOR OF: CITY OF EDMONDS
FOR: LOOP DETECTORS AND AN ELECTRICAL JUNCTION BOX
AFFECTS: COMMON AREA
KEYSTONE WALL
ON PROP. LINE
PATIO
STONES
4 - :
.
.
OF I i � . _
FSITE / � I : . :
BLDG , 44.
... A .' '
/ I * `
/ ,
� C3
�
� \ 7
WOOD FENCE
0.2' E. OF PROP LINE
KEYSTONE WALL
ON PROP. LINE
FACE RETAINING WALL
ON LINE
'
4
' - - A
,
I , *41 - .
. .
.
: I
.
4 . .
i .., .. . ,
L , A
SPECIAL EXCEPTIONS:
4. DEED OF TRUST AND THE TERMS AND CONDITIONS THEREOF.
GRANTOR/TRUSTOR: MURPHY BUILDING COMPANY INC., A WASHINGTON
CORPORATION
GRANTEE/BENEFICIARY: WASHINGTON FEDERAL SAVINGS, A UNITED
STATES CORPORATION
TRUSTEE: WASHINGTON SERVICES, INC., A WASHINGTON CORPORATION
AMOUNT: $91d,000.00
RECORDED: DECEMBER 21, 2007
RECORDING INFORMATION: 200712210148 .
.
RUST STATES THAT IT IS A CONSTRUCTION DEED
OF TRUST. THE TERMS AND PROVISIONS CONTAINED IN THE
DOCUMENT ENTITLED "ADDITIONAL ADVANCE AGREEMENT" RECORDED
AUGUST 26, 2008 AND MARCH 7, 2011 AS RECORDING NOS.
FFICIAL RECORDS. A
DOCUMENT RECORDED MAY 26, 2010 AS RECORDING NO.
FFICIAL RECORDS PROVIDES THAT THE DEED OF
TRUST OR THE OBLIGATION SECURED THEREBY HAS BEEN MODIFIED.
AFFECTS: THE LAND AND OTHER PROPERTY.
5. EASEMENT, INCLUDING TERMS AND PROVISIONS CONTAINED THEREIN:
RECORDING INFORMATION: MAY 29, 2009 UNDER RECORDING NO.
1
IN FAVOR OF: PUGET SOUND ENERGY, INC., A WASHINGTON
CORPORATION, ITS
SIGNS
FOR: TRANSMISSION, DISTRIBUTION AND SALE OF GAS AND ELECTRICITY
AFFECTS: COMMON AREA i .
. �
.
6. EASEMENT, INCLUDING TERMS AND PROVISIONS CONTAINED THEREIN:
RECORDING INFORMATION: -OCTOBER 28, 2009 UNDER RECORDING NO.
IN FAVOR OF: PUBLIC UTILITY DISTRICT NO. 1 OF SNOHOMISH COUNTY
AND VERIZON NORTHWEST INC. '
FOR: ELECTRIC DISTRIBUTION LINE FACILITIES
AFFECTS: COMMON AREA
�
7. EASEMENT, INCLUDING TERMS AND PROVISIONS CONTAINED THEREIN:
RECORDING INFORMATION: DECEMBER 22 2009 UNDER RECORDING NO.
IN FAVOR OF: PUBLIC UTILITY DISTRICT NO. 1 OF SNOHOMISH COUNTY
AND VERIZON NORTHWEST INCORPORATED
FOR: HIGH -VOLTAGE DISTRIBUTION LINE AND DISTRIBUTION LINE
FACILITIES I
AFFECTS: COMMON AREA
. CABLE TV -\
RISER
TEL. :x
RISER
TRANSFORMER :��
POWER VAULT
(4) POWER Ll
METERS _\ ,_ I - I
,-P(Uci)
I
RIM=441.48
6" PVC N/S=436.78
�//,
BLDG. AREA=
4126± SQ. FT.
I
. �//,
" ,,,, -� , n "! - �,,�
t", , " ", � ,,� ,�,� , , `
, , , ,,,, �,, ! iii!i, `-
'16, , , " , 1
, " " , , ,
� , " , ". ,
11 k � " , " � � � I
" , ,
1"'
I III0 j , , , & I'll , il
I M t � � " " I'll, 11 I" I'll, , ,
I I
I I
I I � , I i
11 �
I " , , ,
1-1,11 1" 0, I',, 1�1` I
I
I
a� � Amm ?i
SPECIAL EXCEPTIONS:
1
8. EASEMENT, INCLUD . ING TERMS AND PROVISIONS CONTAINED THEREIN:
RECORDING INFORMATION: AUGUST 5, 2010 UNDER RECORDING NO.
IN FAVOR OF: COMCAST OF CALIFORNIA/COLORADO/TEXAS/WASHINGTON,
INC., ITS SUCCESSORS AND ASSIGNS
FOR: BROADBAND COMMUNICATIONS SYSTEM
AFFECTS: COMMON AREA
9. TERMS, PROVISIONS, REQUIREMENTS AND LIMITATIONS CONTAINED IN
THE WASHINGTON CONDOMINIUM ACT, CHAPTERS 43 AND 428, LAWS OF
1989 (RCW 64.34) AND AS ,IT MAY HEREAFTER BE AMENDED.
10. TERMS, PROVISIONS, COVENANTS, CONDITIONS, DEFINITIONS,
OPTIONS, OBLIGATIONS AND RESTRICTIONS CONTAINED IN CONDOMINIUM
DECLARATION AND AS MAY BE CONTAINED IN THE BY-LAWS ADOPTED
PURSUANT TO SAID DECLARATION: .
RECORDING INFORMATION: MARCH 4, 2011 UNDER RECORDING NO.
11. ANY ASSESSMENT NOW OR HEREAFTER LEVIED UNDER THE
PROVISIONS OF THE CONDOMINIUM DECLARATION OF WILLOWDALE
TOWNHOMES, A RESIDENTIAL CONDOMINIUM, OR ANY AMENDMENT(S)
THERETO, OR UNDER THE BY-LAWS ADOPTED PURSUANT TO SAID
DECLARATION, TO THE EXTENT PROVIDED FOR BY RCW 64.34.
12. PROVISIONS OF THE ARTICLES OF INCORPORATION AND BY-LAWS
OF THE WILLOWDALE TOWNHOMES OWNER'S ASSOCIATION, A
FIT CORPORATION, AND ANY TAX, FEE,
RGES AS MAY BE LEVIED BY SAID ASSOCIATION.
RECORDED: MARCH 4, 2011
RECORDING NO.: 201103040311
13. RESTRICTIONS,. CONDITIONS, DEDICATIONS, NOTES, EASEMENTS AND
PROVISIONS, IF ANY, AS CONTAINED AND/OR DELINEATED ON THE FACE
OF THE WILLOWDALE TOWNHOMES CONDOMINIUM, A RESIDENTIAL
CONDOMINIUM RECORDED MARCH 4, 2011 UNDER RECORDING NO.
201103045001, IN SNOHOMISH COUNTY, WASHINGTON.
THE TERMS AND PROVISIONS CONTAINED IN THE DOCUMENT ENTITLED
"AFFIDAVIT OF MINOR CORRECTION TO: A.F. #201103045001"
RECORDED APRIL 22, 2011 AS RECORDING NO. 201104220385 OF
OFFICIAL RECORDS.
14. ANY RIGHT, ASSERTED RIGHT, OR CHALLENGE, MADE BY ANY �
PARTY, INCLUDING, BUT NOT LIMITED TO, A CREDITOR,' TRUSTEE OR
DEBTOR IN POSSESSION IN BANKRUPTCY TO AVOID OR INVALIDATE THAT
CERTAIN CONVEYANCING DOCUMENT WHICH RECORDED MARCH 14, 2012 -
AS RECORDING NO. 201203140189 OF
OFFICIAL RECORDS.
SPECIAL EXCEPTIONS:
15. ANY IRREGULARITY IN THE FORECLOSURE PROCEEDINGS LEADING
UP TO THE TRUSTEE'S DEED RECORDED MARCH
14, 2012 AS RECORDING NO. 201203140189 OF OFFICIAL RECORDS.
16. THE TERMS AND PROVISIONS CONTAINED IN THE DOCUMENT
ENTITLED "NOTICE OF INTENT TC HOLD DECLARANT RIGHTS FOR
R" RECORDED MARCH 16, 2012 AS RECORDING
NO. 201203160227 OF OFFICIAL RECORDS.
.
.
.
DISCLOSED UPON RECORDATION OF FINAL
SUBDIVISION. .
NOTES
1. TITLE INFORMATION RELIED UPON FOR THE PURPOSE OF THIS
SURVEY WAS TAKEN FROM FATC0 ORDER 577598, DATED 11/20/2012.
2. ALL SHOWN DISTANCE ARE IN US SURVEY FEET
SDMH RIM--441,52 .
BOTTOM VAULT=431.60
TOP VAULT=438.82
WATER LEV'LL=7.75
� 14" DECIDUOUS .CONC. 3.5" LANDSCAPING TIMBER
. WOOD WALL
I FENCE MURKIN TOWINHOUSES COINDDMINIUM CONC. WALL DECK DECK
" 1.2' S. OF 1.5' S OF
m . W/ARBOR
6 14" DECIDUOUS 1_1�� JUNIPER PROP. LINE PROP. LINE 0.8' S. OF
11 I . i I - PROP. LINE
- r� J"<-� � � rr-1 �S8W1448"E 318.71-in
I- / 11)1# I � ' -1- - ,,, , - A, , , , .
� �.__ , t -
I
,
I � I ,WOCD:I< _777�k7� �,
1� ,. � ___� '_a� �, _\
- - 7, - " Z__ �l .,
. . I` , "x � � � --I',- ER ) , - - -_
�, I :
...... - ,-` FENCE - - - - -- --,!,
. ,: �. .:� ,,�, 12" DECI 0 __�",;�-�!',',-,- _.-,�,,,
WOOD FENCE STUB .1 " _�,
y ,-`11.3' S. OF ".�_ , �
�,,�`,___'l , JUNIPE � ) _��,___,,,_','_,� : , ., . , e
� � , I !, /
I
-
" - ; ___
,
- �
- � ON PROP. LINE R PROP. LINE ��--�,���,;,�,,--,',�--�'.�"-:-. _ll'
�
-, 11 I .... I ... Z 11 JUNIPE "' -�,,-,"", - 7t�
� ,-- --
:41 misc. ,,,,,��, ,�,',,'�," -
%��l , - �,
'j , I
Z .� - � - 14" DFCIDUOUS �--�� ,T, NA)"
- JUNIPER QT11 I _ i I.: "Ll"', ,,,_ �
- I t
.; I , ,
11 _,_
" ,
�;� , ,
� ,
'�-- � R� 22" DECIDUOUS . � ,_!i'L�1,1�"'�l � ��
:11, __ L ,� ��`?:,�,;�� " �. *
, -
- �__-,�,,'.�____-, "', `` _�
1��'
_4 ", \_ 48" SDMH RIM=440 26 , , ,
-� .,,�� - .
, , �. misc. , - `n','� , ,I, ,:",,-,-��,,, ,-T�
:-, I , � ", 1, , - - -,��
- � � I _
I I ,��
__ - - ,�,��,',,�"-�,,.-��_,���,-",L"I
- ___-__ . ,
�' :1 \ NE 1.00 S'Sw " _ 1, . �-,'�, ,�,'
" ,�_-, STUB CENTERLI I �,�T��,`� -, .'�
�,� I i� , YARD -\ t, �-,_ ilz,zlz,z,z"","..,���.,!,-��,',: ,", ,
I
. , I
, _,:,
- - � J� � _�_ I
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SURVEYOR'S CERTIFICATE:
TO: TREVOR S. LANKTREE, P.L.S.
THIS IS TO CERTIFY THAT THIS MAP OR PLAT AND THE SURVEY UPON WHICH IT
IS BASED WERE MADE BY ME OR UNDER MY DIRECTION AND CORRECTLY .
REFLECTS THE CONDIT] S OF THIS SITE AS OF THE DATE OF THE FIELD
SURVEY. ,-:�;? ,,�
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TREVOR S. LANKTREE, P.L.S.
WASHINGTON REGISTRATION NO. 45789
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