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WARREN CONSULTANTS, INC. KS
No ALKI ♦vt Nvf sw
MA"Lt. 11,1041 ilnN aeitf
IASI IIA Ilse
Nuvoinber 18, 198)
City of Renton
Municipal Building
Rentai, Washington 9UU55
Attention: Click Huatpituii
Director of Public Woritc
lie: Drainage Utility Inipleuwnl.itmn Procosu
Dear Dick:
1 appreciate the opportunity to have discussed the dromage utility concept with you
and Mike Parness. As you know 1 have been somewhat of a crusader for this idea from
live beginning, dating back to the late 1960's. 1 truly believe that is the correct
approach for the City of Renton and 1 will be pleased to do anything I can to assist you
ui its uiydenwnlatiai.
As we discussed Dick. I have luund that a throw atop approach is the most logical and
acceptable way to establish a drainage utility. I have enclosed a draft of how such an
aptlroaeh could work at Renton. Please foul free to use it as you see fit and to call on
me it 1 can offer any other evplanution or information.
best regards,
WARRLNJ/CU -,LJ TA IS, INW.:.
Richard E. Warren,P.E.
Preside t
REWIt7
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WARRLN C.ONSULt ANTS. INC.. P,S
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a1A1T1r WAiNIa11014 Nile
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L I I V Of RLN I ON
Iat A1NALA 11IR11V IM/'LLMI.NIATIUN
BACKGROL")
In 1960 the Slate Legislature changed the municipal rude IRCW 35.67.020) to provide
fur the deftnrtiuii of the public dranaye system as a public utility. With this authority
rites and counties may declare their drainage systems to be a utility, an a par with
w,iter •cal uowvrathu, by urthoorwo. Itatea fur dramatic servicu cai also lA! adupled by
Ordinance and the olaeted body may issue revenue bonds bawd on the revenue produced
from the service charges. As with other utilities the management and fundrny of the
utility to in the hands of the elected officials and is not subject to voter referendum..
In this way the State has provided fur the efficient and lalg-range provision of vital
wrvmes to meet Iho public need.
The lady of Bellevue was the first to implement this legal authority and anco then
laruni.i. VancuuVoi. Muuntlaku lurravu, Lvuru Li, WICLI Island and Studucuumi have
completed their work tab do the same. Kent, King County, Seattle, Bellingham, and
aeveral others aru now in the process of implementalmn.
The concept of drainage to a utility service has been tested in the courts and has Gaon
uptwid including the use of rates apptiod uldinst all properlos reyardloas tit Ihotr
position in a druindye basin,
04PLEMTc7JTADON PROMS
Drainage can bo declared a city wittily and rates can be established by simply passing
an ordinance Or Ordinances, HOWever, in order to fully understand now the concept
will work fur Renton, or any city, it is reeeseary to first evaluate the local situation
ad project coals and rates Y rem this swodysls a judgement can be node on the
impact of potential rates and Income un the needs end liability of the City and on the
property uwno;s ad buspwases within the City. To provide Bob analyse a three step
process 1s sugigealad:
004aULTAN\6 In lAt "M WORKS 1NOOIlav
PLOOO& raAUalLm♦ eaiWN AMU IMWAOIIIINT
::tatr 1 1RalMvrery NadYwe
This slap establishes the gareral level of current City espendltures and activity
related to draueye. It 41W provides an uuurview of drainage problems and needs
includlny plaruurty that may W r"ire.l to establish final capital needs.
Stop 1 also endytes the way that the City nionayes drainage end sugipsls changes it
needed As the final element of this analysis a proposed budget for the operation and
maintenance of the drainage syuLuni is prepusud uieludmgi
1. Staffing
2. Equipment
S. Materials
4. Planning Itequirunwnts
5. Short-term Capital pry+rovements
6. Administration
From this budget a proposal would be develuped for an initial rate structure. This rat"
structure would be an interim rato until a capital improvement program could be
developed and funded(Steps 2 and 3).
A major buiwfil from Step 1 is that All of the procedural slops to legally establish
drmnayo as a utility can tM completed and Lne basic iato systrin can be in place so
firer Idler de Llenti are eLralyhtlurward aiid edit be addressed as to prewmtly dune with
other city utilities. The budget and rates resulting from Step 1 will permit Adequate
staffuttr to iM" drainage and to provide for plenoeq fur lung-term capital
facflitiev. Some critical short-term impruvemients can else be funded and It
better level of rmainlenamo can be provided "rhia in itself will ruduer the City's
Potential for liability significantly.
Bled 2-Facility Planning
Unce a drainage utility new Wen astabhshediluviding will be available to permit the
devulupownl of a master plan for each of the Cily's drainage basins. LNily fruni ltns
level of planning can a prioritized eApilal Improvement program be developed sundar
to the City's current 6-year road plan.
1 rwh th;v study will cones a auyyuated funding roquiromo,it that cuff be used to project
lha: rates ruquired to provide vorwua lovuls of funding, f madly a priority program of
improvements and false will be established Without the utility and service rhartles in
place Step 2 would have little Mope of being implemented.
Step 3-Capital 4tfWovemeota
Uasud on the results of Slap 2 the City can issue raveivti bumis, adjust service charge
rates, and proceed to design aM construct the priority capital faculties headed to
prov,du for IUlafa growtly salvo cuirunt pruoluuia, and reducit the City'* pulonthd
liability.
f rum this point forward the re,!ulor manayemont procedures of the City would
continue to &&sure a fully functioning dramoq, system that to adequately funded.
SCMEPME QF WA ,EWkNTATK W
the Udony Of uiyrlementalion can be arranged to meet the requirements of the City.
Minufium times are indicated below:
Shy 1 _Prelinunary Analysis
Study 2.3 months
Adoption of Uudyols 1.2 ❑i olllh■
Adoption of Urdinances including Hearings 2.3 months
Development of billing 2-3 nwnths
I lit balliny and utility operational 7.11 months
Stop 2-Facility hlreu,al
Select Culiwitants 2•o nwnths
Conduct Study 6-8 nwntha•
Envirunmental Rve iow 3.4 months-
Adopt t".LF'. 2.4 months-
Adjust Raise 2-3 agrlths-
Issue lunch )., months•
12.16 months
-Those items can be concurrent to soma degree
Stop 3-Cap" Hnytiwernalts
Select Uwlg,tars 1-3 months
0004911 4.0 menthe
Call for hid,contract 2.4 montha
l:wulivctiun 0-1 Z, month
16-23 months
F ran thaw figures it can be well that from the start of Step 1 to first baneflt from
capllal facilities Call be a 2 to I year pi we"
COSTS
Stws I -Pn1lmYtaf yr Attalwa
Assuming a draw" mariaQamanl consultant were used to conduct the initial study
With lilt, strung wgipoll of the Clly daft, a buduet Can be estimated fur blap 1. Untrl
a decision to proceed Is made only lhu Initial study PusS would he rncurreLL
t. Initial +ludy • Culuuilanl %o,I1Ulf
• City staff Slum
Cott to tirbl decision p,ia,t SulDUU
1, putilic ,rwaUngs, i IA, • ,'o'i"lilont S ',,Um
Ordinance droftn 0 ntjff 1,111111
6uutul Jl 11 illlif
Cost to adoption 529,00U
3. Catabliwi billings -Colu,illaril S Slow
-City Staff 12,000
• Direct costs MN
Subtotal Itt unu
Probable lutai cost to first bdhny $46,000
SiWe 2 •FecWlr WamMw
Costs for this step would Us developed N pert of the Slop S study.
Ste') S -Cqulal InMum.nxnile
Costs for capital facdrtios would be devapod as part of Slop 2. Ths fin31 selection of
the Step S program wwild be lip to the City band on naad, rates, arws priorities
eetabhohod lnrouyh the three .top alarming and v%4)l9ment4ticn procea. A nor*
prat"llmery V%Lunele ul Step S cast &wId Ue dv%eluped duruvy ttw SWO ` studv.
R113OLUT1ON NO. .�,�,
A 11SOl1TION of the City Council of the City of Renton.
Washington relating to outface water dratnage and intent
to create s store drainage utility,
A RISOLLTION relating to surface water drainage.
WNIRgAS, the City Council Is responsible for the public health, safety, and gen*io:
weifaro sod has determined, based upon post technical studies and staff reports, that
the provision of public store drainage systems is necessary for the health, safety, and
general welfare of the people of Renton and,
WNERLAS, the City Council recogntaed the problems associated with storm water drain-
age and as ouch he* had "worst reports prepared, includlna a 1978 GREEN RIVER BASIN PLAN,
1960 LAST SIDE WATER S141D PROJECT, 1960 FLOOD INSURANCE STUDY, and the 1962 CITY OF RENTON
SURFAck WATER NANAOOIENT RRPORT; and,
WNEREAS, the studies completed to date have vetiflod that properties within a spe-
cifle drainage Main or sub-basin contribute directly to both quantity and quality prob-
lems of the stream draining that booln; and,
WNIRIAS, a uniform policy moot be established by the City for the equitable finanr-
ing of store dral"Ng facilities;
NOW TNIRIPORI, IT 15 NERIRY ORDERED AND RESOLVED AY THE CITY OF RENTON, so follows:
Section 1. The Council finds that surface water drainage to an area-wide problem
that extends beyond the City limits and that the several reports prepared evidence many
of the problem* aasoclota- with store water drainalts and soma probable solutions.
Section 2 The Council further hartbv expresses its intent to seek solutions to the
problems of surface water drainags as A legitimate, deslrahle and nacasoory objective of
City governownt.
Section ). The Council further finds that all properties within a dratnaRe basin or
subbasto contribute dirge tly o, indirectly to both water quantity and qunl,ty problems of
the *items draining that basin; that all such proportion are served with droinage sot-
vice* by the City when drainage problems within the basin or subbasln are corrected; and
that the owners or occupiers of, all such propertiea should there In the ttneoctol burden
together with other agencies or funding sources when available in the cnyroctton of drain-
age problems within their basin or subbsoln In exchange f.-r the drainage for the drainage
&*"Ice* those properties receive.
Section A, A CONFRENINSIVE DMINACE PLAN will be devolopod and as this plan and now
plans are adopted end expanded upon which outline drainage basin or subbastn water quan-
tity and quality problems in detail and the necessary improvemontm that are required to
correct the problems, the City Council state• Its Intent. on behalf of itself and Ito
staff, to pursue dllisontly the implementation of ouch plans on a tlnanctally sound and
equitable basis
Section ). The Council hereby declaas* its intent to create a storm drainage util-
ity lheorporottng the element* set forth hereto and instructo staff to proper* the noces-
eary ordinances for coneldetatfon. The service area of the utility may extend beyond the
oorporsto city limits provided corieaponding inter-agescv ogratments are entered Into with
the respective govorntna body.
ADOPTED at a regular session of the Council of the City of Rail on, this day of
1942.
RARRAM Y,SN 1NYtMN,NAYtiR
A MU1 1 AP►NOVto AS W Fool
CITY Of tt"TON, WASNINDTON
ORDINANCE NO. __--
An Ordinance of the City of Renton relating to
storm and surface water, establishing a storm and
surface water utility, and adopting a system or plan
of stores water collectlun and treatment for the City.
WHEREAS, the Renton City Council finds that an expanding popu-
lation and Increesed development of lend use ham led to drainage and Storm
And Surface water runoff problem► within the City, And to "a "b'Ite
degradation through discharge of nutrients, metals, ell a,w gn+Sa, th It
materials, and other dstrimental substances Including, without limitstlon,
Insect and wood control compounds; that uncontrolled water runoff on streets
and highwaYt poses a Safety haterd to both lives And properly; and that con-
tlnuatlor of present drainage planning and practices, t0 the sAtent that
they exist, will lead a erp%IOA, property damage, and anda .7er 'he health
and safety of the Inhabitants of the City; And
WHEREAS, the City of Renton has undorto"n a program to control
the runoff from All now development within the Clty'$ drat"go bu ms; the
storage recharge function of Ali designated oraa% known as sinks; the pro-
vision of %trades bank stabill+Ation where necessary; the creation of vege-
totlw buffers for temperature control and habitat enhancement At selected
locations; the lra stment of first flush discharge from maJor at -rm drain
systems; and the establishment of a permanent and comgrehensl.e Quality and
quantity monitoring program within the Clty; and
WHEREAS, the Initial planning stages toward further imIslomenta-
Lion of these goals have been completed, and personnel of the City of Renton,
and neighboring cities of King County have met and rovlewed the Joint pro-
gram relating to surface water runoff particularly within the Crosn River
aesln. and these personnel have reported to the legislative bodies of their
respective gOvarnamntal unit%; and
WHEREAS, the City Council of the city of Renton, Washington, has
studied the reports submitted to It by Ms City'% staff charged with retponsi-
blllty to so ropdrti NOW, TNEREfORE
ME IT ORDAINED gY THE CITY Of RENTON, n follows
Section I . The City Council finds and declares that absent effective
regulation and control, emitting storm And Surface water drainage conditions
In all drainage basln(s) within the City generally described In tRHIbIT A, by
this reference Incorporated hereto and hide a part hera0f, 60mtiwto a
potential hazard to health, safety and OfoOerty Of City Inhobltants. The City
Council finds further that natural and manmade storm and surface water drain'
cgs or smwerage facilities together constitute a storm and Surf Ate water drain-
age facility and that effective regulation And control of at*?* And surface
water In all strum Oasims and flnencing Of the facilities requires Joint regu-
lation, control, and financing with sane or all Of the cities of Auburn, Kent,
Tukwila, Bellevue and King COun1Y, WO%hington (the "County"1 pursuort to Chapter%
)SA? And )S.)A RCN, land Article 11, %action it Of the Washington State Constl-
tuill", allot that the beat Interests Of the City r"ulre the formation by the
City of a ►tore age surfaes water utility and the transfer to that utility of
ti a MIMlgltIg to the city,
tlpn 2. There Is hereby created and established a storm and
surface water utility of the City. The City elect% to axercl►o all the lawful
powers necessary and appropriate to the construction, condemnation and purchase.
acquisition• addition to, malntonance, conduct and operation, mahegam*nt, requ-
lotion and central of, the storm and surface water system described In Section J
of this Ordinance as the same may hereafter be added to, bettered or extended
within or without the present and future limits Of the City, Including• without
limitation, ail the lawful powers to fix, slier, regulate swd :ontrol the rate,
charge% and conditions for the use thereof.
•� Thera Is heroby spoclfkod and adopt*" he original sy►tam
or pion v• a star%. and surface water tacllltl*s describe' as set forth on the
map attached at tioillIT A hereto and made a part hereof by this reference, and
whlcr shall Include All properties, Ihto rosc, physical and Intangible rithts
of every kind or nature pwn*n or hold by the City, however acquired, Insofar
at they relate to or concern •corm or wrt*C* water tewerago, further Including
without limitation, all tuch properties, interest and rights acquired by adverse
possession or by prescription, directly or through another. In and to the droin-
ago or storage, or both, of storm or surface tetor%, or both, through• under
or over iends, landforms, watercourses, sloughs, streams, ponds• rivers, lakes,
and swamps, all beginning, in each cost or Instance at a point where storm or
surface waters first enter the storm or su• 'acs water system of the City and
ending In each case Or Instanct at a point where such storm or surface waters
exit from the storm or surface water system of the City. an,1 In wldtI, to the
full extent of Inundation caused by storm or flood conditions.
Sectionn't, The City Coonci' eapressly finds the value or the "e" ,
described original system or pion of storm and surface water fecilltlss Is equal
to the value of rates,* from primary responsibility therefor InaOfat as It
relatos to or concerns %corm or surface waters within the City, Accordingly,
all of the City'% abov*-mtntion*d facilities, Including the rights and Interests
as a part thereof, as they relate to or concern storm or surface waters art,
for purposes of Section W 09.11 RCM, hereby transferred to sod subject to the
administration of the Clty's storm and surface water utility created by this
Ordinance, end all ether institutions and department% of the City having primary
responsibility therefor within the City are, to the same extent, released from
such primary responsibility.
Section S. Inasmuch as the City now Own% all those facllltls,. Includ-
Ing the rights end Interests as a part thereof and the original system or plan
%at forth in Section ) of this Ordinance, *her* is no estimated cost thereof.
$or
�%Iqnj, If any portion of this Ordinance es not et hereafter
am*ndod, or Its appllcetlon to any person or circumstances- is held Invalid Or
uncon%litatlonal, such adjudication shell not tifect the validity of the Ordl•
nonce % a whole, or any section, provision Or part thereof not adjudicated to
be Invalid or unconstitutional, and its application to other persons or clrtum•
stanc%% shall not be affected.
• i •
ysC CI On �, Th's Ordinance "11 be In force and take offset thirty
joys from and after Its Passage by the Council and publlcation as Provided by
low.
PASSED BY THE CITY COUNCIL this _ day of 1982
ATTEST:
Aox ns Motor, City Clark
APPROVED BY THE MAYOR this day of 1982
Barbara Y. Shinpoch, Mayor
Approved at to form:
Lawrence J. WarreA. City Attorney
Data of Publication:
d x PUSLIC WORKS DEPARTMENT
OESQN I NC 211- 61MUNICIPAL NKAUNNO O ANiLL AV
10 RBNMN,MABM.BBBaB
s
r
rtn qa rss'M� INTER-oFI-IrE MEMORANDUM
RARBARA y. SMINPOCM
MA"
Date Mav 12, 1962
To; Richard Moughtor, P/W Director
Don Monaghan, Design Engineer
From: Bob Bergstrom, Engineertog Supervisor
Subject: Storm Detention Policies
After the lAst run-around with the Value Village Developers and
the problems with our lack of formal policies. 1 would Ilk* to
set some of these formsittlas to keep the Nearing Examiner satis-
fied.
The fit" of who is deterred from storm detention Is also a thorny
one. This attached map Is my recommendation for the areas deferred
from storm detention requirements and declarations of critical drain-
age areas;
Deferral Areas:
Lake Washington Blvd. Railroad Tracks west to lake shors
Logan Avenue west to Cedar River
Airport Way north to river and lake
N. 1st St, southeast to river
Maple Valley Highway southeast to river
City Nall
Maple Volley Railroad northeast to river
All other areas r*qulre storm detention. Two critical drainage
basins .re declared with special storm detenll on requirement*.
1, May Creek - Money Creek Basin
2. Springbrook Creek Drainage upstream of Valley
Freew*v
3 164WId fiay Qr.-xx a«ram
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TIIE CITY OF RENTON
POLICY DEVELOPMENT OEPARTMENT a 235.2552
MUNICIPAL buILOINO 100 MILL AVE 10 RINTON.VIAEN NMI
a
P
rto *EPIt� K,i.
BARBARA r. SNINPOCH
MerOp
MEMORANDUM
:' � Olok Naughton ^.
WNI ibneahan •'
Don NIII*r j
Mob bray
Mike ral;.esa
rwml naw Clwxns
RtI sSL!MP 1t1'fi91,ntUM
TM 11"t •tsP to the Prwe" of deValopira the *core .ix,: ,,,. •v I.4t ,
inwlws fllltllg soon of the blanks aontal.iRd in the 7acar tap*rt.
After you he" reai*wad this repnrtr w* GhWld hold a ea.atint to dis-
ruaa filltro to the blanks that apply to Msntca and ptoeeP®Laq with
the A"t Reap or attaip.ttnq tt *"Iusta the elniftm ..al.ital lal.rlw*n*nta
which shauid be intludrd in 00 utility.
DOC wt
Attacheanl
City Of TOCOMO
STORM DRAim umn y how
FORMATK M AND RATE REaoiff uwju
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1
krattte r,Chin h Maya Inc. ciro.uu n.C mmr An hnm 4 Apphrd Sr101h0,
August 27, 1991
City of Rontan
Municipal Building
200 Mill Avenue South
Renton, Washington 960ti
ATTKNTIONi Dick Roua.�ton
Director tf Public Works
RUKRKNCR: Ators Drainage Study Proposal
Dear Dick:
Mara is a copy of the study proposal we a !'eittod to the city last 1�..
As you may recall, we ware asked to *ddresa mayoral drainage basins and
the drainage utility issue separately, and that is the way the proposal
was written.
The number* a far as staff hours should Still be good, providing the
scope of work is still satisfactnrv, Wage roU* and overhead would need
to be adfustod to reflect current levels. This would probably add about
10 percent to ov*roll cast baud on our 1941-82 salary adjustment&.
We would be ploas*d to moat with ynu, Dick, to roftoo the steps of
services or gouorally discuss the appioach to the city's drainage problem.
Give me a call and we can get together,
lest r„asrdo,
KRAMRR, pats h MAX*. INC.
/(/ r
Richard l. ran, PR
Vice President
Attachment
cc: T. Kearns
RKW:eI
lei'remA e w
Name1*m9 ev "an
•
i
Sturm Drainaa
= Planning
a t 1rol it )s€tl fu.r
City of h�h�;ttun, \\�Isltin torn
f Decenihcr
i
pram pr, ('hin K Mimi. Inc.
• Kromer,Chin M %layo,Inc, t oaa It,nr r nor+nears.An ha tw Atpn.,i z,,.w
(l' KC%I 01174-0110
• '}`� December 11, 1980
Mr. Warren C. „onnisson, F.E.
Director of Public Works
City Of Renton
Municipal Building
100 Mill Avenue South
Renton, Washington 99U55
• References Professional Swrviou prop"fine
Storm Drainage PlwNtt;
Deer Warren:
• The 'irm of Kramer, Chin 3t Mayo, In IKCM., is pleased to
submit tan coplea of our response to the City of Ronton's
roc? It for proposal for the subject project.
Our expertrnce In the field of drainage planning, design and
construction management totals approximately 75 years
• with specific emphasis on pngResave drannttge management
since the early 197t)s, Over the years KCr has assisted
many Northwest agencies and oommu.utias in their.kvalop-
ment Of master plans and,'ar utQttim, 'Theare includet
City of Bellevue C ty of Stetla000m
• City of Bellingham Cry of Mountlake Terrace
City of Corvallis, Oregon King County
City of Albany, Oregon Clark County
City of Mercer Island Portland Corps of Engtneers
In each ease financial and management analysis, along with
• the normal technical aid hydrologic analyses of drainage
muter planning, was an Integral part of our effort. It is
OMIlical that the manngemon. Qf drainage be coordinated
with the other existing ut Bite, of the City, turn as input In
the Overall oily planning, operation and maintenance.
budgeting and finaneing. Sin" drainage planning is based
• upon land use and growth patterns within a Jurisdiction,
KCM's approach to drainage muter planning is to involve
planners and economists so that the preparation Of the
master plan and capital improvement plan is tailored to the
projected growth and davel„pment of the City.
Kraitter,Chin R D1avo.Ina,
Mr. Warren C. olonnason, P.&
Do"Mber 11. tJ60
` Page two
Used upon our meeting of A November 1960. as ou.11ned
herein, we have proposed a scope of work whica meludas the
following five pha• ,;
Phase I upset Blvd. Detention 9asin Review
Phase It Park1unset Blvd. Basin Master Plan
Phase IL Renton village So. Ttn Street ,Ma.ste,
Plan
Phase 1v City-Wide Drainage Master Plan
Phase y Utility Developments
Brief descriptions of the various phases of the project are
included rare to give an overview of how the work would be
organised and accomplished. This proem is similar to chat
used successfully in many of our past projects of this typo.
Our approach to the City of Bellevue's drainage planning is a
. good recent example which utilized this type of approach.
Phase I - Sunset Blvd, Detention Basin Review. In thin task
t ire>.rention of the ention basin at the upstream end of
the n irk;Sunset Blvd. Basin duMr; the 11 November 1910
storm will be evaluated. A brief memorandum report will be
prepared summarizing the review including probable outlet
settings and discharge estimates. Since the operation of the
pond during the Hovemoer 21 storm is the subject of a law
suit all work will Do clearly documented.
Phsse 11 - Park;Sunset Blvd. Besln vi to Plan. Phase 11
entails the .veopment o a smage masts! plan toe the
entire Par,z.Sunset Blvd. Basin eased on full development
conditions. 011'Watsr seperation will ba considered in the
vicinity of %irks Washington Bosch Park. The recommended
master pier would be accompanied by a capital improvement
` plan to shoe the various projects. their costs and timing.
Phase III - Rent an 11,10So. 'th Street Master Pan. In
asZa a�master p an or t anion rge; . .in reet
Basin will De developed based on full development from
current zoning. Alternative plans for controlling the
drainage will be dawloped and ovehiatad before selecting
it* recommended master plan. .%a do Phase It, a capital
improvement plan will De prepare
Ph a tv - r tv-W rH Or ins a 11 ter 1 n• The drainage
master p anninit or Itai entire KitntOn nurladiatton will be
Drought together in Phase Iv. The remaining basins within
the City will vie snaivzed as in Phases it and 111. Each basin
whits was not analysed hydrologioally in previous phases
Kramer,Chin w Mato,Inc.
tlr. warren t`. Gatnason, P.E.
necwmber I c, 1810
Page three
` will be done at this time. A etty wide capital Improvement
plan will be developed which will outline the various
projects, their coed aid priority of Implementation.
Phase V - Cnlit Devel ment. In this phase the work to
Bata ids tTw aMa accompusnad. An attorney
+ (such as Mr. William N. Appel, attorney with the firm of
Roberts, 9hafelman, i.awrence. Gay and Woch), would work
with KCN to waist the City in preparing the necessary
ordinances to authorize formation. An initial %coping of the
utility services will be done here along with setting the rate
schedule, astablishing interim budgets for services, and
generally doing all preparation necessary t, bring the utility
into existence.
.Also developed in Phase V will be the rules end regulations
for operating the utility and complying with the drainage
ordinances. Procedures would oe established for permit
acquisition, operation and maintenance, and billing for
services.
We are looking forward to working with you on this
important project. Please give me a call once you have had
the chance to review Out submittal. Our workload is
currently such that we we able to proceed with the project
1 m mediatsly.
Tiwnk you for enm daring KCNt.
Respectfully,
•
K RA PIER, CHIN x MAYO, INC.
• �. Richard E. Warren, P.E.
Vice President
REWzim
Fticlaiturm
•
•
A
CITY OF RRNTON
STORM IIRAINA(lh PLANNING.
i rsiHLE OF CONT!NTS
PN�C
` kPPROACH TO THE PROJECT 1
SCHEDULE AND FEES 9
RELATED EXPERIHNCF 11
KEY PROJECT STAFF an
A
A
A
A
A
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• APPROACH 'ro rim PRIURt'T
•
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CITY OF RENTON
STORM DRAINAGE PLANNING;
• A?PROACH TO THE PROJECT
The City of Rentcn, like many others in the Pacific
Northwest, is experiencing rapid growth and changes in
existing land use which results in higher peaks and
• volumes of stormwater runoff. Growth and lana
development also typically degrade the water quality of
the runoff into receiving water. As existing storm
drainage systems are overtaxed and in need of significant
expansion, upgrading, and maintenance, it is often
dif`;^ult to generate the amount of revenue needed for
• the projects from general public works funds. When this
is the case. establishment of a storm drainage utility can
be tha means by which revenue through user charges is
raised to accomplish projects. Using the drainage
utility's annual income from user charges, the City can
sell bonds to financt the necessary capital improvements
• as well as adequately operate end maintain their existing
system.
Our approach to assisting the City of Renton establish
their drainage planning program has been formulated and
tested over the years on similar projects for the cities of
• Bellevue, Steilacoom, Corvallis, and Albany. Oregon. to
name a few.
Based on discussions with the Public Works Department,
our suggested approach consists of the following phases:
• Phast I c ^iet Boulevard Detention Basin Review
Phase 11 - P. -::Sunset Boulevard Basin Master Plan
Phase III - Rev on VillagelSnuth 4th Street Master
Plan
Phase IV - City-Wide Drainago Master Plan
Phase V - Utility Development
•
Phase I - Sunset Boulevard Detention Basin Review. In
this task the opera ion of N detention basin st the
upstream end .1 the Park;Sunset Boulevard Basin during
the 21 November 1980 storm will be evaluated. A brief
memorandum report will be prepared summarizing the
•
• 1 ��
review including probable outlet settings and discharge
estimates. Since the operation of the pond during the
November 21 storm is the subject of a lawsuit, all worK
will be ciearly documented. Phase I will specifically
include:
1. Visit the site to take photos and observe the
condition, setting, and arrangement of the
detention facility,
2. Review the conditions at the detention facility
with any local observers and the Public Work$
Department.
i. Collect and review as-built drawings did
operation manual lit my) lot the pond.
4. Using November 21. .980 Sea-Tae torm late and
pond outlet conditions. compute the outlet
discharge and water surface elevation in he pond
for each hour of the storm.
S. Compere and comment on the computed storm
performance cf November '1st to the design
condition.
6. Document the review and analysis in a
memorandum report to the City.
• Assist the City in the capacity of "expert witness"
• should this be required in the case.
Phase 11 - ParA'Sunset Boulevard Hasin Master Plan.
Phase 11 entails the eve opment a anage master
plan for the entire Park,Suu.et Boulevard Basin used on
full development conditions. 011,water separation will
be considered in it,* vieimty of LaKe Washington Beach
Park. The recommended master plan would be
accompanied by a capital improvement plan to show the
various projects, their casts and timing. Phase 11. Ill. and
1V all involve basin master planning and the steps to
accomplish each will be very similar. Phase 11 will
inaludei
1. An inventory of the existing drainage facilities
• and capacities to itemize proniem areas.
� 2 FM
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:. Review prior planning and drainage analysis done
in the basin and work with the City staff to ensure
planning criteria meets City goals.
• 3. From aerial photos, f to surveys. and City input
regarding basin land -ise soning, prepare a
hydrologic model of the basin zing KCM's Penn
State Urban Runoff Program, which we have
available in our in-hou-.e computer storage files.
• 9. Simulate a 25- and 100-year event storm's effect
upon the basin considering both existing and
future developed conditions and identify problem
areas.
• S. Develop alternatives to mitigate problems and
consider multiple-use improvement where
feasible. Evaluate erosion, oil,water separation,
and water quality improvement needs in the tiasm.
6. Prepare schematic plans and total prilet Cost
• estimates for each alternative plan.
Evaluate alternatives and select most rost-
+ effective plan for implementation.
8. Prepare a capital improvement plan for the hasin
• master plan outlining the various projects, tiring,
and costs.
9. Document the planninit effort in a brief, tit
complete, bound report containing all drawings,
cost estimates, computer runs. And analysis
• procedure.
Phase III - Renton VL'I •South nth Street Master Plan.
n Phase ■ master p an or t e onion i age, oat n
Tin Street Bain will be developed based on full develop-
ment from current zoning. Alternative plans for
• cordrolling the drainage will be developed and evaluated
before selecting the recommended master plan. As in
Phase 11, a capital improvement plan will he prepared.
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The specific steps involved in the master plan develop-
ment for the Renton Village/South 7th Sti set Rash are
eesentlally the same as outlined i.1 Phase IL However,
• this basin is somewhat larger so the inventory of
facilities, hydrologic modelling and probably the
,h,velopment of "sin improvement plans will be more
extensive. Our analysis will make complete use of
previous planning efforts (suet) as the Jones Report) for
the basin so that past work Will Ce used to the fullest
• extent pesalble.
Phase IC - CRv-Wide Drsina a waster Plan. The
amege master p anmrtg or the entirn Renton
jurisdiction will be brought together in Phase IV, The
remaining basins within the ally will be analyzed as in
• Phases 11 and ❑l, Each basin which was not ana'yzed
hydrologically in previous phases will be done here. A
city-wide capital improvement plan will be developed
which will outline the various projects, :heir coats and
priority of implementation.
• Phase IV would include the following subtaskst
I. Work with lhs city staff to complete the
inventory of existing drainage facilities and
systems and to Identify deficiencies and problem
areas in a baain-bv-basin approach.
•
2. Review, in detail,prior planning and data.
1. As required, obtain additional information needed
for the detailed analysis of each subdrninage
. basin.
4. Work with the city staff to establish problem
assessment and solution criteria in keeping with
the city's goals.
• S. From existing maps, surveys,end records, recheck
the majur drainages and subtaasins.
B. Work with the city staff, u.,inq aerial priotes. field
surveys, and otfloe take-off, to break doiln all
subbasins into existing land use and hyd•ologic
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elements. Project future elements based on
current city planning projections.
• 7. Prepare all data for input to the hydrologic
mathematical model. A model will be prepared
for each basin.
8. Run the model for the basins to establish existing
and design flows and to locate potential problems.
• Output from the models will provide information
to be used in the development of alternative
solutions to correct drainage problems.
9. Run the drainage ,nodel to develop a conventional
storm drainage design plan which will become the
• basis for estimating cost and environmental
effectiveness.
10. Using the models' output, develop alternative
concepts for handling urban drainage from each
designated subbnsin. Consider land use restric-
tions, storage rind control, off-stream pipelines,
and other techniques to provide for drainage while
maintaining the natural streams, wetlands, and
drainage elements. Consideration will be given to
the duality of runoff throughout this planning
pros.
•
11. Consioer multiple-use possibilities during the
development of alternative plans. investigate
sources of matching funds for land acquisitions
related to park and recreation uses.
• 11. Prepare drawings to illustrate and identify all
alternatives considereu.
19. Prepare cost estimates for all alternatives
considered including ba.;ie conventional systems.
man-made facilities, land requirements
• (easements, restrictions, acquisitions)and others.
14, Recommend optimum plans for each 9uh-basin
together with overall costs. The total planning
shall be in the form of a Drainage Master Plan for
the City of Renton.
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15. Prepare a capital improvement program outlining
the various project planned under the )taster Plan.
total project costs. implementation schedule
estimates.
16. Throughout the effort KCM will maintain close
liaison with the City Staff. Also, KCM shall assist
with, and participate in, env public involvement
efforts y requested by the City.
• 17. The results of Phase IV shall be presented as s
bound report containing all drawings, estimates.
and data required to support the recommended
plan for drainage for all sub-basins.
• Phase 0 - Otllit, .)avelo ment. In this phase the work to
estao is t e drainage uti 1ty is accomplished. An
attorney (such as Mr. William N. Appel, attorneys with
the firm of Roberts. Shelelman. Lawrence, Gay and
INoch), would work with KCM to assist the City in
•-eparmi; the necessary ordinances to authorize
• >rmation. An Initial scoping of the utility services will
b, done Mre along with setting the rate schedule,
estaulishing interim budgets for services, and generally
doing all preparation necessa* ;o bring the utility into
existence.
• Also developed in Phase v will be the rules wid
regulations for operating the utility and complying with
the drainage ordinances. Procedures would be
established for permit acquisition, operation and
maintenance and billing for services.
• This phase specifically includes:
A. Preliminary prior to adoption
1. Develop an understanding of the existing drainage
management functions of the City along with
budgets and present staffing.
2. Scope and outline the functions of the utility. The
needs assessment will be converted to manpower
and level of responsibility requirements to
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determine staffing necessary to operate the
utility. Equipment, space, and staffing budgets
will be outlined and budgeted.
• 3. Through a review of City maps, site visits, and
discussions with Citv staff, define the utility
boundaries and further oullins the subbasins or
districts of the utility jurisdiction. This effort
will he coordinated with the master plan.
• 4. An important task of Phase V is to properly
inform the public and City Council to gun them
understanding and support. RCN has experience
in this area through numerous public involvement
campaigns. The City staff will be kept
• thoroughly involved and briefed on all element.< of
the work.
S. 'Taking the staffing and equipment requirements
(developed in V-2 in consideration with the master
planning expenses and other projected costs.
• establish interim budget requirements.
8. Develop the initial utility rate structure and
define the method of billing for all properties to
be charged for drainage services. The attorn--
will review this subtask effort to ensure its legn,
• status and compatibility with future bonding
requirements.
Assist the City In retaining an attorney to draft
and/or advise in the preparation of ordinances and
resolutions to establish the utility.
• 8. Working with the City and legs! consultant,
prepare the set of rules and regulations for the
operation of the drainage utility.
9. Piepars masters and graphics for a public
• information brochure suitable for distribution to
ali prospective utility customers explaining the
purposes of the utility, the rate structure, appeal
procedures and operating ruise and regulations.
•
47Sr'J�1�141!��
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B. Implementation
1. Working with the City staff end legal etraW.tant.
• prepare masters and graphles for a eet of rules
and regulations for the operation of the drainage
utility, including procedures fors
o Permit requirements and acquisitions.
• o Operation and maintenance of facilities.
o Determining coats and haw to Integrate Costs
in the exist.'rz billing system. Assist City in
setting up budgets and accounting.
• o Appeals for service and procedure complati:ts.
.. Finalize drainage ❑tilily rubs and regulation
program.
3. Assist the City with public hearings and the
• development of procedures to adopt the utility.
{. Assist the City in preparing the billing format for
all property classifieadolts. Aid in the
preparation of MUM and the final
• implementation.
gtivironmartel Im ct statements. The need for
anvirona to Impact statements for both the master
plena and the utility formation should % more closely
assessed during the planning effort a input from the
• public Is heard. An Eis for the muter plan can be
delayed until the major projects in the plan are
programmed for design. Many of the smaller projects
will not require an 6I5 or a checklist.
i
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MATI
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SCHEDULE AND REFS
•
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CITY JP RENTON
STORM DR..LNAGE PL.ANNINII
• PROr MSIONAL SERYICPS &TIMATR
We propose the work to oe accomplished on a time and
materials bums with a maximum limit not to be exceeded
for each phase of.the prolvet. The project could be
• accomplished under five separate suthonlations, one for
each phase. The labor cost to the City would be
computed on the basis of the direct job wages of the
Individuals actually working on the project times a
multipller of ..85 to cover company overhead, employee
(rings benefits, and professional fee. Dtreet job cwU,
• such as printing, computer, etc., would be charged to the
City without overhead markup. 3ubconsultme services
would to charged to the City with an audited overhead
rate to cover the handling Marge% of the prime
corwuitant.
The estimate of manhours and oasts for each phRNv of
the project are outlined r, iewt
•
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• v
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Total Total
Nan Labor Direct Total
f51
Phase Hours cost Cost Cot
• 1. suet De- 150 $ 7,000 5 500 $ "So0(1)
tention Review
It. Park/sunset 350 14,00u 4.000 181000
Muter Plan
• III. Renton 475 19,000 5.500 24.500
Yillaae/South
7th Street
Master Plan
IV, City-wide 11511s 63,000 12,00e 75,000
Master Plan
V. Utility
Development
A. Prelim- 375 14.500 9/500121 24.000
• inary prior
to adoption
9. Implemen- 725 28,000 2.000 30.000
tation
• Vt. Utility
DEIS 200 '),000 i,99n 10y00n
Preparation
TOTALS 5,850 $154.500 $34.500 $189,000
• NOTE5z-
1. Dora not include preparation for and apponeance as
expert witness. If required, this will also be billed
board on aotual time spent
• 2. Includes an allowance of $8,000 for attorney fees
which would De arra ged by City.
3, Total coat includes labor, overhead,professional fee.
and all direct roots.
• 4. 'To be determined as part of preliminary work,
Includes some additional attorney fesa.
10
STORM DRAINAGE PLANNING
CITY OF PENTON
PROPOSED SCHEDULE
1981 1992
PHASE Jtw Feb M Mt M ec r M+V Jul Jd AA* $0 Oft Noa D Jew Fob No AM MeY
1, Swam Omento mm
Pn..d f"w~
11. hrktS.'"o
Meta Plan
{!i 1
111 Raarw.VNagv
S> 7.b 6U9 Plan
IV. Crty W e 1
Ma "Plan
Y. UIdnY(M ek.,,•
I
Reryn Ck w q User fen
e
•
♦ RELAYED FAPF.RIENCE
CITY OF RENTON
STORM DRAINAGE PLANNING;
RELATED EXPERIENCE
KC M has had an extensive involvement in urban drainage
Planning m the Seattle area for some years. Our involve-
ment in storm sewer planning goes lack 30 years, but our
strong efforts at developing more environmentally sound
and financially feasible approaches to drainage really date
from participation of our staff in the King County
Environmental De%olopment Commission's Committee on
Streams end Watercourses In 19E8 through 1970. Since
that time we have directed detailed planning for RIBCO
Urban Runoff and Balm Drainage Study for the Seattle
District Corps of Engineers; for Bellevue, Mereer Island,
Bellingham,Olympia, Vancouver, Stedeeoom and others in
the state of Washingtom and for Portland, Corvallis, and
Albany in Oregon.
We are experienced In working with various agencies end
the public In the planning, design and construction of
drainage management systems employing both structural
(conventional) and nonstructural solutions. An important
part of our approach to drainage planning, In feet, is
+ management and utility rate studios. All of these efforts
have involved program development and legal/financial
programs, including rates and ordinances, staff organiza-
tional %tudies, intergovernmental agreements, environ-
mental assessments and public Information efforts, We
have often pioneered the edvaneement of new technology
in these areas, Including financing techniques,
KCM developed the first drainage utilities in the Pacific
Northwest for the cities of Bellevue and Steilacoom,
Washington. The City of BeUovue's drainage utility ass e
current annual operation and maintenance budget of
approximately $500,000 generated from drainage sarw c
charges. KCM Ceti, assisted the City of Corvallis, Oregor
to enact a drainage service charge to support a manage-
ment system. Both muhieipalitias ware assiHed by KCM.
Like 0,e Green River Valley, these were rapidly develop-
ing areas which experienced localized flooding, channel
69 41
� 11 ,
•
•
erasion and property damage in dow
• the if. Inty of natural dramrgeways taraam runoff. In thoee Imei� dua to
Junction With tfle u u[Arr protects, we nu., mereMT
sins,,t0h ^t"`,°develt�ear ink and grading andnw.ter
sere and tees tw
• and on&" n ratesJd of�tNv c g's, de as Ioe Q`if�e
dralnaga_ryatad tlnane(al conaideratlt in
well
a+ other
urb4l, I)rtrq. Atrtr Pya t
• aaNrvan or the city of
a"l
adopt re fuLl ,ytunfirst munti and in :he Northwest to
ehergas to tuna tna utility1ev
renewed netionwi �'ogrAm. As a r Y monthiv service
th de attention for ! "Wilt• this protect llaa
• he quantity
ProWemsar�t d tt solving
sYateeOntIn It tianitlg of of tM plan was to urtwn
Permit
tM retention W� for 1n t Ci 8 + env1� sUeah�
8e naturaluaa of detention st
do vol adopted♦ storage and err a�aga and '
• dovol mom is baaad�ram of runoff eo"Ohar areas,
notedor Pr each su ; i On the 'viewable runoff ratesadgnew
Speciam Met of the Fl llevue s. master plan, rh total
in* Stuidy�Md KCM and storago ite aom s wel eeoe$1
S13 million"Ju ,
land PIu Ben A thor rho t'chas ity in negotia�onis t
to UlanWooesnows.srveC an import or land-e inuse tradeoffs.
th
stands? wnstruatnk,pepleoty in the lgo,, 13 tmPlemen.
using the Joint (7f*V * 'i hagn
)1`e"1'M�ti'^M"'ce Plan far the 'Town of
rwon
ii���tf'f upland ois of �m'and
atlta+ynt
County into rridantial 'Pacts'eWnay ofMd nnerersed the
fd estat(tlg din n i, laeil'w�h+auti4 saedd the
Bximlx'+ed past roel�+fl,
anu prew.n, I ^turd-phased prof resulted
utltKd in
draiha�e patterns and their
� I
•
•
rolationshlp to land development. We mate recom-
mendations for drainage facilities and control procedures.
• In 19T3 on inventory of the existing drainage system and a
plan was prepared which recommended that Stailaeoom
estaoilsh a drainage utility, prepate a set of opsrating
rules and regulations, and purchase property for runoif
,ontrol basins, including Farrell Marsh.
• in 19"e Kr..M began working on a master plan that was to
become the planning document for the drainage utility and
also supplement the drainage ordinance. The basic goal
wu to preserve the natural stream system while providing
an dfective drainage system amenable to the community.
• Uue to bwdgat limitations we developed a prioritized
schedule to study the basins invol a, . We recorded known
problem arose and conducted a limited field investigation
to determine what type o! facilities would be but suited
for the bestn and what elements of the natural envirec-
ment should be left undisturbed. We developed
aliens-lives for "oh basin, with various mutes at d techniques
for accommodating or controlling runoff, and reeom-
mended the best plan it. terms of practice, economics and
maintabnanee of the environment. Plans and profiles were
prepared in addition to the cost estimate. The Steiba000m
drainage utility Is fully operational ,no the master plan is
• being implemented.
Comprehensive lhn.range Plan and Hevlsiww,
City of Nrrcrr Isluid, Washington
In 1"4 a comprehensive trunk sewer plan had bean foemu-
let d for Meteor Island as the most efficient and
eam mic means for conducting stormwater runoff to
L4M Washington. This plan was never fully impiwuo fad,
however, because of Increased interest in preserving the
undeveloped areas of the island and the lack of available
• funding, in 1972 KCM was requested to reconsider the
original plan and offer alternatives that would protect
tress, shrubs and natural water courses, as well as private
property, in an endeavor to maintain the island's natural
environment. y
l JUR�1
• 19
•
KCSI addressed the problems of erosion acid siltation in
downstream areas caused by intcnsi lad development near
• the creeks, stormwater collection in roadside ditches, and
culverts and storm towers discharging into numerous
natural ravines. Methods explored during the study
included onsite storage such as root-top or limited parking
lot ponding, underground storage, "Clue-green•' develop-
ment of We integration of permanent water areas with
• open spaces to provide for flood storage, embankment
storage In roadside ditches, bypass piping to Lake Wash-
Ington, and the construction of check dams in a few trial
ant. A priority schedule, alternatives and specific
recommendations for each of the basins were presented.
The City has established a drainage utility to implement
• the KCM plan.
Careful analysis of plans for construction of Interstate 90
across the island was recommended to ensure that the
highway department's drainage plans were integrated
properly into the island's com4.•ehensive plan. Also urged
was strict enforcement of land clearing and grading
ordinances recently adopted by the City to prevent con-
struction that would result in erosion and earth slippage in
der^ areas.
Urban Drainage Study and"701" ,iood Control Plan,
Bellingham, Washington
1t was K, '.', ,Lisirnwnt to develop a plan of drainage
controls e a facilities that would permit the continued
growth of is Bellingham urban area and at the same time
• preserve u,d enhance the natural beauty and recreational
potential of tho natural streams that now through the city
to Puget Sound. The plan addressed the effects of
urbanization on the natural stream system as well as the
existing storm sewer system as it affems the streams. In
addition the areas of Lake Whatcom, Whatcom Creek,
Smith Creek, Squalicum Lake and Squalicum Creek were
mvestig 'ad to determine potential flooding and related
unc, irabie conditions as they relate to toning and/or
intended land use. We also developed recommendations
for prevention of future problems. Detailed plans and
•
• '4 k3�,
•
•
specificauons were prepared for runoff control systems
and stream restoration for Whatcom CreeK and Squalicum
• Creek.
Drainage Management Plan, Albany,Oregon
1'he city of Albany, Oregon authorized KCM to study
existing drainage systems and drainage management
poll-Gies, and to propose alternative ways of improving
drainage in six areas: Oak Creek, P-nwinkle Creek, South
Fork Oak Cresk, Hutchinson Ditch, Cathy Ditch and
Thurston Ditch. After the runoff for each basin was
computed, the respective drain,»ge systems eere assessed
for adequacy. The KCM plan concluded that contir .ation
• of traditional pipe drains would be the moat appropriate
method of controlling runoff except in the Cathy D tch
Basin industrial area, where detention is cost effective
and maintains water quality.
• Management deficiencies resulted in part from lack of
planning, with influence over the drainage system held
simultaneously by four departments and rr city authority
to direct development. KCM recommended a centraliza-
tion altern.Hve which places drainage systems in the
Engineerin; .. ,.artment as a subdepartment. With the
addition of a full-time drainage engineer, the drainage
subdepartment could function in design, development, and
policy capacities. The plan recommended this altern� ive
as the easiest to implement and as having acceptable
functional capacities. Overall the dra'-age management
plan included the following recommendations; (1)develop
staff capabilities and awareness; (2) develop and adopt a
master plan and related policies; and (3) develop long-
term funding. Because present funding is Inadequate, the
drainage management plan recommended a drainage
service char;e to finance currert needs and future
investment in capital facilities.
•
Prafnage Utility study for the City of Corvallis, Oregon
The purpose of this study was to evaluate existing city
drainage problems based upon botli physical and admims-
trutive parameters. The study team made recommends-
r
15
tions, including costs, and suggested maintenance pro-
grams for improvements to the storm drainage program.
As a means of offsetting costs, the study team recom-
mended establishing a service charge for user of the
storm drainage system. Organizational .,hanges required
to implement the program and effect better drairaga
management were also e,gcussed. Thi, program is now in
the final stages of I n1pien•entation.
R1BCO Urban Runoff and Basin Drainage Study for the
Corps of lingineero,Seattle District
KCSI prepared a regional planning study to analyze new
• urban drainage concepts related to water quality and
quantity in the Cedar River,Lake Washington and Green
River Basins in King County, Washington. it addressed
urban flood control and flood plain management and
investigated the effects of urbanization and changes in
land use on small streams, alternative concepts of
collection systems, control of flooding and ponding, and
ground water recharge. Extensive data gathering was
required, including analysis of local urban drainage
systems and local water quality characteristics. Mathe-
matical models were used to assess the effect on quality
and quantity of urban runoff by types of land use and
modes of conveyance systems. The models are used as
dynamic planning and analysis tools to continually ktpdate
the plan.
Drainage Management Study for the Portland-Vancouver
Metropolitan Area. U.S. Army Corps of Engineers,
Portlan,t District
Rapid growth of urbat. and suburben areas of this five-
county region has resulted in ine inability of natural and
man-made drainageways to handle increased runoff,
restating in localized flooding, channel erosion, and some
property damage in downstream areas, including siltation
of streams and ravers. It was the inters; of the project to
study the entire area, present alternative drainage man-
agement plans for two pilot basins,and dev,lop a drainage
management planning manual for use by local govertr
ments so that drainr •,r and flood control can be eorsid-
lti �f
�
•
•
Bred in resource management decisions. In the initial
phase the KC.NI team -eviewed recent studies of the area
• and interviewed local government personnel and inter-
ested citizens. Then alternative drainage management
plans, structural and nonstructural designs, and costs were
developed for two majur ;rosins. These were presented to
local government and public groups for discussion and
comment before final recoc;mendatimu are made. The
final phase was the drainage management manual, which
represents state-of-the-art developments in drainage
management.
Lake. Ballinger Hetwbiiitation Project for the City of
• Mountlake Terrace, W&%Iunftton
This project wa< a tvtw program to sddress the source of
pollutants in the water shed of the dt,ined area, in
addition to system controls for addressing the pollutants
once they get into the service system. The KCM project
• team developed an environmental impact statement and
was involvedd;n public hearings throughout the duration of
the proj"t. Alterr,tives for restoring the lake were
developed, and one ternative was selected for recom-
mendation to the c .n.. KLM also provided design and
construction administrrtion.
•
Forbes Creek Reh•bllitatfon Plvn, City of Kirkland
This project required both drainage and fisheries expertise
• to incorporate a drainage management plan with adopted
community goals and policies specific to fisheries habitat
enhancement. KCNI evaluated existing conditions of the
2,250-acre drainage basin and recommended both struc-
tural and nonstructure' rehabilitative techniques that
included stream covering, weirs, riprap, drainage piping,
• gravel cleaning, shade vegetation, streambank vegetation,
velocity deflectors, silt removal, pooling, vegetation
removal and blockage. KCNI also provided followup
monitoring of the effects of KCM's rehabilitative tech-
niques.
79
• 1C
_ Mr,
Drainage Management Plan, City of Olympia
KCJI developed a c-mriage management pier. for the
Percival Creek drainage basin. Under natural condiuors
this basin, because of its underlying pervious materials,
had very little surface :low to Percival Creek, an impor-
tant salmon and steelhead stream in the area. Impending
development of large shcpping areas and service facilitier
` for 8vergreer State college made planning for drainage it
this basin imoerative. KCM developed a dritmage pan
utilizing runoff control to simulate natural flows in the
basin and assisted the City in applying the runoff control
procedures to the first few large development proposals.
The developers have complied with the City's require-
ments and as a result, will, in the aggregste, save a large
portion of the money that otherwise would have been
needed to invest in major storm sewer trunk facilities if
Percival Creek were to be preserved as a viable fisheries
resource. Providing assistance to city staff during the
implementation of new drainage concepts was a major
concern to us.
Pacific Highway South Drainer:Study
King County-Hydraulics Department, Washington
This project involved the areparation of a drainage ,master
plan for a rapidly developing, two-square mile drainage
'iasin in Federal Way, Washington. The basin, which i
largely commercial aid industrial dev-lopmenL%, is experi-
e: ^ing severe flooding problems due to an inadequate
existing drainage system. The project incorporated
hvdrologic modeling, water quality, environmental and
cost analyses to reduce the floodirg and water quality
problems of the basin. Key elements of the drainage
control alternatives for this oasin were on-stte runoff
controls and detention storage. A funding program : scd
on utility se,viee charges was developed.
•
Hurnl Urdge Creek Drainage Management Plan far
Clark County and the ;-ity of Vancouver, Washington
This prolem invoive,i e. nage master plan for a 36-
• aquare mile area of Cie aunty encompassing portions
is SO
i
of the City of Vancouver. Plans included both drainage
control and detention storage. Specific development
i ;xoposels were reviewed for several subdivisions and
commercial developments during the course of the study.
The project included hydrologic and water quality
analyses, social, environmental and cost analyses, and
plans to create a public perk, reduce flood damage, and
eliminate water quality problems. The City of Vancouver
i and Clark County are proceeding to establish drainage
utilities to manage and fund the plan developed by KCM.
1
19 ®��
•
•
•
• KEY PROJECT STAFF
•
•
CITY OF RENTON
STORM DRAINAGE PLANNING
VEY PROJECT STAFF
Kramer, Chin A Mayo. ins, is recognized as a leader in the
Northwest in the field of drainage management. Our staff
pioneered much of the work done In runoff controls and
utility service charge funding. KCM was invalved m
water quality analysis for many projects throughout the
nation as part of aquaeulture activities, lung before the
reWirements of current environmental legislation. We
have been extensively invoked on a continuing basis with
studies of the effects of flooding, ernsion and peilution on
-star quality, and solutions to these problems through
drainage management.
KCM has been integrating urban and resource planners
Into our urban facilities planning projects for many years.
This multidisciplinary approach to drainage management
planning has been especially succes:.dl. Examples of our
planning efforts include involvement in the joint venture
of Metropolitan Engineers of Seattle from I858 to the
present in order to serve the Municipality of Metropolitan
Seattle in the renovation of their entire sewerage system.
This work provided our staff with onsiderabte experience
in regional management and planning. Preparation of the
RISCO Urban Runoff and Spain Drainage Study Report for
the Seattle District Corps of Engineers gave to experience
with the River Basins Coordinating Committee IRIFCO), a
multi-agency organization which coordinated stadles for
management of water quality. water m,,�,rees, solid
wastes and drainage for the Metropolitan Seattle area.
46
Coo to our extensive experience witty drainage manage-
ment protects, KCM staff members have considerable
expertise in develot Ing the types of plans, procedures and
prc;rsms to satisfy the City of Renton's fleet^. When
involved in drainage planning, we give careful attention to
# the utility's commitment to not only identify problem:
associated with storm runoff q"ntity and quality,but also
to work toward solutions for those problems, and than
toward implementation of those solutions.
G2N7IP��Py�''
20
•
The following paragraphs describe the "key" individuals
that will be Committed to the development of your
project. Other disciplines. such u biologists and
landscape architects, may tie needed at various phase$ of
the work. Individuals from these disciplines with
expertise in drainage planning will be assigned to the
Project as they are needed.
SE211OR STAFF CONSULTANT AND MANACI-:it
• RICHARD E. WARREN,P.&
Mr. Warren will assist the project team es a Senior Staff
Consultant in the master planning and engineering phases
of the work, Mr. Warren will personally manage Phase V,
Utility Development, of the project due to his extensive
background in that arcs, fie has 25 years experience in
municipal and conservation projects and it has been
thrtwgh his efforts that the urban drainage utility concept
has fcuud oc"ptnnee in several Oregon and Washington
communities. He is well known in the field of drainage
management ind has been responsibly for the project
• management, including liaison, agency coordination,
Public involvtMent e^4 financial elements for the
following repreeentshve projects: RIBCO Urban Drainage
Study for the Settee District Corps of Engineerat Burnt
Bridge Creak Drainage Mannwement Study for Clark
County; and urban drainage studies for the cities of
• Bellevue, Enumclaw, flel°nghani. Nereer Island, Olympia
and Thurston County, Washington, Most recently he has
been in charge of the drainage management project for
thr Portland-Vancouver Metropolitan area for the
Portland Corps of Engineers. as well as the Seattle
Metropolitan Water System Study for the Seattle Water
• :"'tart m en t.
P1:OJECT MANAGER -THOMAS M, KEARNS, P.E,
As project manager Mr. Kearns will ensure the timeliness,
• cost effectiveness and overall progress of you, project.
He served as project leader for the Bellevue Drainage
Master Plan which is similar to the Renton project. tier.
Kearns was personally involved in all aspects of the work
performed for the Waster Plat.. He participated in ail the
•
• 21
"walk-throughs" of stream habitats and drainage basins
and determined siting of all the detention ponds. He was
aware of the sensitive environmental aspects of specific
stream channelizatton projects as proposed in the Bellevue
master plan and developed cost estimates for the
measures proposed.
Mr. Kearns is group manager for the civil.municipal
section of KCM and has been project engineer or manager
for a variety of civil works. He has hands-on experience
in all elements of projects from feasibility analysis
through planning, design and construction inspection eon
administration, including evaluating financial
Opportunities and obtaining grant monies. Much of his
work has involved assessing, planning and designing of
. utiPty systems renovation and upgrading to meet new or
projected requirements. Prior to joining KCM Mr. Kearns
participated as a client consultant coordinator for the
storm drainage portion of the Snohomish County Urban
System Engineering Demonstration Project, WASH-USE-I.
• Cther representative drainagr-related projects in which
he has been involved include: Comprehensive Water and
Drainage Plan for Sodavllle, Oregon: the Drainage
Management P,an for Albany, Oregon; and the Capital
Facilities Plan for Hoquiam, Washington.
` PROJECT LEADER -STEPHEH C. WAGNER, P.R.
Mr. Wagner will be responsible for the day-to-day
operation of all Phases of your project. As our propose.+
project leader, he will supervise staffing and work
Scheduling he will be the main contact between the City
` of Renton and our project team.
Mr. Wagner's diversfiwl ovgme-- , ig experience well
qualifies him for thi, relo as ,r i, ct leader for your
project. He is a spo,.i,ta,1 In all ivpea of hydrologic and
hydraulic planning end design. His association with
• Projects includes chemidal and water distribution systems,
pipelines, refineries. mM1111" of d fossil fuel power plants.
Prior to joining KCM, Mt. Wagner's expertise focused on
hvdrnulic design and transient investigation of pipelines
and assoolated control systems, dams, spillways, canals
and other hydraulic structures. His work also involved
•
'{Y
•
•
hydraulic network design and computer analysis, flood
studio-, sedimentation and scour studies, flood routing +nd
racer^oir operation studies. Mr. Wagner has supervised
hydraulic transient field tests ana discharge
measurements related to circulating water systems. He
has also developed mathematical and physical models of
hydrautic systems and prepared forma; repots. In the
area of pipeli-es and pump stations. Mr. Wegner has
worked on projects for water supply, circulating water W.,
penstock design and analysts. The pipelines involve:
• ranjed In size from small domestic water distribution
pining to :14-inch transmission pipelines. He has been
responsible for the la,nut, sizing and pressure
eltvatication of a 30-mile pipeline to supply makeup
water to a nuclear power plant. This project included
design of tr:^ collection manifolds, pump station sizing and
• layout, gate aid valve stations. river crossings and a
system operation program. Other considerations were
technical and economic analysis of various pipeline
materials including fiberglass, corrugated metal, steel.
reinforced concrete and concrete cylinder.
• Mr. Wagner has managed or led the following drainage-
related projects over the peat five years; lake Ballinger
Rehabilitatic- Project, City of Mountlake Terrace;
Meydenbauer Drainage Study, City of Bellevue; Surface
Water Management Study, City of Kent; Portland
• Drainage Management Study, Portland Corps of Engineers;
Utility Comprehensive Plan, Town of Sultan; Saanich
Drainage Study, Vancouver. B.C.. Canada.
HYDROLOGIC ENGINEER -JOHN F. CUSSIGH, P.E.
• For your project Mr. Cussigh will provide the hydrologic
computations/analyses to predict runoff hydrograph
characteristics under existing and future land use
conditions. These analyses will be performed via KC)l in-
house computer models developed for flood and reservoir
routing.
• Mr. Cussi,ih's background includes hydrologic work,
hydraulic analysis and design experience which tie has
applied to projects concerning drainage management,
water supply and aquaculture facilities. He has had
responsibility for conducting these projects from the
•
•
:s S
•
conceptual stage to final design. He reviews hvdrolooe
data and assists in rote analysis and layout for many KC%l
projects. His project experience relating to Rentoni
• needs and goals include: The Portland-Vancouver
Metropolitan Vrea Urban Drainage Study for the V.S.
Army Corps of Engineers in Portland; and the Pacific
Highway South Drainage Study in Federal Way.
CIVIL. HNGINBER-JOAN M.CARLSON
Vb. Carlson will assist in the engineering aspects of the
iaaster plan for your project. She Ls a civil engineer with
broad experience in slurries and design for municipal
drainage projects. She n,•-forms hydrologic and hydraull
analyses, writes reportu :uid specifications and prepares
cost estimates, project budgeting, runoff det,rminations
and computer analysis, of pipeline networks for small
water systems. She was involved wi'h the City of Kent
Drainage Management Study and therefore he knowledge
of your arse, and citizen needs. Other water-related
Projects in which Ms. Ca-Icon has participated include:
the take RaBinger Rehabilitation project where she was
project leader and designed weirs, sedimentation ponds,
and determined ,,reambOd rehabilitation measures: the
Seattle Comp�ehemive Regional Water Plan (COMPLAN)
and Draft Environmental Impact Statement, where she
i•;,sted in the writing and compiling of research; the
During Detention Pond Study. for which she performed
computer analysti, the Sumas Water System Improvements
Grant Applieati,n; and the Enatai Interceptor study sod
engineering evCuaP-., phase.
CIVIL F-MOHsEER - PHILIP G. ROPPO, P.E.
+ Sir. Roppo will have engineering input into the master
plan segment of your project. He has been involved in a
variety of drainage planning, management study and
design projects, in many of which he gathered and
prepared data for computer progrsmm�ng and utiljtiaed
film information for engineering decislon-making, These
projects include the Bellevue Drainage Maxtor Plan, in
which he prepared struet,.rsl alternatives and cat
estimates using computer date; the Steilacoom Drainage
Master Plan, in which he served as project engineer, the
Portland-Vancouver 'aetropolitan Area Drainage
.14
1
•
"•magemeht Studvi and the Ft. Lewis Nester Plan, for
winch he designed a storm drainage system to
accommodate future development. Mr. Roppo has also
designed a storm water retention system for the Woo and
Park Dav Care Center in SeatU,
URBAN PLANNER - BRYCE A. ECKLRIN, A.I.P.
Ec' lem will have responsibility for the master plan
segment of your project. He has contributed urban
analysis, planning and design to many KCN projects,
including the preparation of environmental assessments.
Mr. Ecklein lea the development of the Ft. Lewis Master
Plan update she is currently the project leader for the Ft.
Lewis Installation Expansion Capability Plan. In addition,
he is currently responsible for development of the Master
Plan for the U.S. Coast Guard Station at Kodiak, Alaska.
Also specifically related to your project, he conducted on
environmental analysis for the RIBCO Urban Runoff and
Basin Drainage alternative systems and environmental
assessments of drainage utility proposals for Bellevue and
Mercer Island, Washington.
Prier to joining KCN in 1973. he was a senior planner for
the City of Seattle. He he, charge of the advance
planning section of the Department of Parks and
Recreation, with responsibility for an $80 million
expnasion and development of the city park system under
the Forward Thrust Program. He was extensively involved
in coordination with community organizations, city task
fore,e and the City Council. Previous planning experience
ii,�olved analysis and preparation of comprehensive land
use plans for a number of cities and covnties in the
Northwest. including Pacific and Kitsap Cow,.iss, Mercer
bland. nnn 'ort Townsend.
Y,
1 I
M
WATER R E.aCURVE, A ali;1 IIHQ
mock);CYre.plewtlent
January R, 19R2
Mr, Dick Boughton
Director of Public Works
City of Renton
2M MII1 Avanw� So.
Hentot, WA, 4RD.9,R
Dear Mr. Houghton;
Thank you for returning Tr call Rt a tim• when I am sure the anew
conditions were a preealhq dwmtl on your office. Like the traffic snarls
ourdangerous and t snow ,tor, bring, stomwater ninolf Poses lnteneittent but
�'e and lore Juurrlsdictienutly lam investigating tthhe p ton cities atxl counties.
and financing draicage control as a utility function, amloaeua seiblito. of �Eeerl
and sewer service. The: Purpose of this letter and the attached Material is
allgily to fnmillartae You with MY experience in developing dM
utilities and with ma f1em, Water Resource Associat•,s, Inc,
During the past eight years I have been involved to various degrees In the
•wtAhlishne.nt of most of the dealraw utilities in Washington state, and
ae•wral in other states ab well. From 1974 through 1978 I was the
or tb`• Bellevue Starve and Surface, Water Utility, and assisted gbe �r
Tactvna, xnei Clark C01inty in the groundwork for similar PmRra .
Since 1979 I have completed management and financing studies for utilities
in Snotamish, Ring, and Clark Counties (Washington), Washington County
mx;L
( st pt), and the cities of Bellevue, Washington and TRIMA, Florldx. The
leasing MpKt ee this wo•�k to -m is that the progra.as lave, teem anxt
xtt being succe"fully tVlexemted, which I feel is the hest test of the
Product it consultant provides.
While there Le 00 000kb00k Solution or approach that will work in every
cnmaunity, I have developed a for addressing imus Mich has been cvnsistea� to the ypldraeand utility
Y e ,fives. it SS a simple and logical
t Wina, Probably a reflection of five years or hav1N. • , opera e a
drains& PrQgMm in the real world. Basically, it Involves structuring *he
i.saMea and decieions in R way that makee setae, and
bast of all IL Rorke.
the amt are not always the name becauaS each city and county is
d111saeent, but the Mom" is dependable. k, tar as I know, my ap0r ech, is
MR14e9 (So far), and
I ale confident that It would work In Renton ,successfully AM it has elontlere. hurt ax
'010 teeth Ave N E, 5wle 107,tMhhYW,WA 90004
170e1 453•9234
As the City of Kenton gins to examine the drainage utility annos Kroater detail, I hope you will keep my experience and pt in
tittAlt rwoti in
mind. Tao many drainage studies are <,,VletIld Only to gather cost on
shelves. I take a great deal of pride in providing each client with a
dnaltlage ^wnage^smt and financing concept which !s tailored to their
special needs. As a result, many of aty clients have hired Water Rfsoiiree
Aaatniatee for additional wark, knowing that the product will be prantieal
Sadotter [:letppnfiisleVies to local ccvditta urs ls At well as benefiting fo ry eaptriteens
a .
At the proseut time I um working with the City of Tana, Florida to develop
a drainage utility there, ttie first one In that state. This will requi^e
Tampa that I be in from Janiary 10 ..o PYebruery 7, but I will he in daily
contact with vj secretary for massages w that I can return calls. It you
am planning a discussion session In the next six weeks or so to take a
first look at the utility concept, I would to happy to share n' experience
with the people in Renton. please feel free to call to ne.
Perhaps some evening during the weeks of tobruary 8th or 15th world be
�Mutually convenient. It 1s very lmportant that the people � ,st involved
have realistic expectations going Into this decision preoeua, reML invol involved
what apprOke, is taktm. Hopefully, I can prjvids soft obj. rt ve lose of
ht
into what is involved in setablietaing u utility, and spat to expect as s
result. In the ntantisw, I would be htµcy to chase! sty questions You lave,
about a• or Ifater Resource Assnciatew, I cocci
clients, Although (or rage you to contact W past.
quality �'be mouse.,) 1 nun a otsa-parson firth, I turn Out n Y produrt and am here to stay. I think T referencen will le,ar thst
cot.
Best wishes to, ,a mum ful and happy I988, including teal progrpse toward
an equitable, stable and politically aoreptable drainage financing Program.
Slnc.er•.ta y;
� ..�_
Hector IY
IUC;mom
.i:''',sat '+�+T+a77iCif: AJlgOK`iA'I(1'tge ifK:
IFf
UHF d TOR J. CYRE
Walter Resouce Associates, Inc.
SUMMARN•
Mr Cy, hu ova 10
�.auf.nv fin tied, proleasrpnd to arnenca yn
"an
wear Wars#dmnuur.t;;n orr e'ntunaGludr alof4n and Suorlaca rr dMt'IalfahOn and water tatJYf ce
prfollS nh MI, C,,na ha nalyua.cneatat foAc an d' 4Perahonel and Jonuart;� aS ato~n , PartKulA$ Sr,IFI Inalar,ne`taHln My d aho.ehM dewbnmon Nnancfal
7' to lha Praaam.ha dew I m I. and on'Site
ul Wala neaourca ha.tary A "I, rntl lgum I D rnl,p( 11, .nd mnow4l
Aarouata; Inx Ua �noePN fOr Yi W
e W faublk andPnw'to,ecror c1Nhh ty luncl�nrta, ;,
PERIENCE r e raeeuli.r uRWar
r
INrrlmar a t
Wan.''u, utifiri v M.hu �c to Janu�b. 1979 ahot
uuonal„ dryvalu PanY•a wnl;ilralpn MI rvadMAh, .•,
+ya Mortal av t Vlyerl4 AwncNI and r __r uadon%,An Ir ate atri, �Rwnt�a
t chntcat tron�iu9 Pro` davrlgprrrrford
IWolNtarr• .t
la _
Duurvor - Wand N
Sloalo red atiortal.ind
Mr CYrr deeelotwd an�rtiti Wn� aM,•.191d • 1970 'rP°ra..
it type in Wuhin ton�.d}"r'yp��Idlyd a aaMtpc
• '{ + ,, 9 '�b. Nonhwwai, P a"' la Tha mrnq�fhw aatw water raawucvma •�`
bN ncemontd Succwit Ull,lid pryYeVad the clmM a 9 F&Puma Ike lint ur '4
haAr -bacaMa nxiilrl ,4i
tnlu vc,ua nn''M4"folo"U. city- natural drrt>,a a ,namus Simi at a n 1 d,rina�0 IXcgtam al n and multiple tier OI a WSMn of Snaama and wtarid,e •rl
con ci A with cnm•entWnal urfore water aSou INahn,,,
In!nfw Hound Eeonomk Drea to _ � control n'a ware mcorpon,cd
m a iouf��a .Qwnty,Mr C i Omani pr
v a devviupad Islet: 1978.u7d
•ctAlturs of.n 1'nnae Ir v ,,j11 S to roordt
In na P ram
UnenmentJ a and rowYa. , us po me
M� Mrot dw and the°ry° �vnali.•anon alfortS
mw �nt�a+w evratuNl _
dunnP Mr `wa rm wnh'hA v+nal,on x it m97�.M 1gN!1<tit Io7d,mopan ** Integrated
t
SraHlr�,.,�• t eWncv rough the Econ Own9 to the public
a.oRr omsr Devvlu
Mr C'gre Could,na nItv,Coupa pmant IAStnq
OPoo•�n drrryrippt�a k,.l_oM V the cvlleyu wnn those of local Wanda
11 A C"pNfy o `1,v '•,,, and the Slate AtrprnoyGorterd'a
EDU �Qram In S"n i I'd er M
du
Marr*pme5'u 1964
yam,
71. in Water Riwurcr and C
PROFESSIONAL AC� '� � Waal Lone Reaourca
Lnatuuie ly W.tar Ra itI.dkv
monW4slUnVon Starr WaNr,rlrl keFudwCOurt�p
Ammncar)publlt War quality"r4`a
Amencan WiNr Rnnurrcgyc`411p�and Aw gory Cia,mi rrw
Ay Mibn' p W A Inatitule for Wale, Rraoumea
Experience
Aithoulh local governments have been responsible for storm and surface water
management for many years, truly effective control programs nave rarely been
implemented. Two major obstacles have often been rucW impediments when
cities attempt to %rlvr drainage problems. (I.) Programs dealing with dra' .age
are often dispersed ew,ig several departments, resulting in a lack of focus and
priority. (I.) A stable and adequate financial bass to fund a comprehensive
stormwater program, including major improvements, is difficult (if not
impossible) to establish within the General Fund. Without a comprehensive,
integrated program or utable financial resources, it '.s Uttlr wonder that
stormwater runoff sent, toes to be a major problem its many .ommwdlies.
To overcome both of these obstacles, a number of cities and counties in
Washington sale have established Storm and Surface Water Management Utilities,
or Drainage Utlittles In the pas, eight years. In the same way that water and
sewer utilities provide an organtsation specifically responsible for those
services, Drainage Utilities offer a program focused on drsin:ge, and an
earmarked financing source which can be used only for stormwater control.
The decision to establish a Drainage Utility is not one lightly taken by local
governments at either the administrative or policy level. A thorough evaluation
of the problems, needs, an,' possible solutions (including the Dtility concept)
is often required. Because ' differences txtweon various communities, those
problems, roods and solutions are unique in each city and county. The process
and timing of implemvntlag the solutions must also be consistent with the juris-
dict on's policies and resources. if profesdionol assistance is sought in
analysing options and developing a program, it Is absolutely essential that tits
consultant retained to provide services recognize the unique situation in the
community, and have the broad experience required to fit the solution to that
situation.
Water Rseouroe Associates. Inc. has the kind of experience ,hat is most
cppropriate for providing asaintance in analyzing the Drainage Utility concept
and successfully Implementing it, i.e.. hands-on responsibility for e*vkloping
utilities and managing Iraicage operations in the real world.
Hector Cyra established Water Resource Asantstea in 1979, after nearly five
years as Manager of Bellevue. Washington's Storm and Surface Watet Utility (the
first in Washington state). Since that time he ..as assisted cities and counties
in aeversl states in developing a drainage utility concept which flu their
need*.
tits personal *ttontlon to each pro)ect ensure* that the firm's clients benefit
by his experience. The following summary of projects the company has completed
or is presently working on Illustrates the range of clientele and services it
has devt.oped. Their success is evidence of Water Resource Associates' track
record. Fort free to Inquire with them about our work.
SNOHOMISH COUNTY S'1'ORMWATER MANAGEMENT ANALYSIS - SNOMET
A program levelooment study was conducted for storm and surface water control
throughout Snohomish County. The study analysed existing and developing
vrobiems and needs, present programs end resources, and a full ratite of
management alternatives for lath the into poratad and unincorporab-d portions of
the County.
The Process included frequent and detailed meetings with both a Citizen's Tusk
Force and a Technical Advisory Committee comp,-. of staff members Oom the
county and participating cities. A consensus w*o veloped among the committee
members, and the sub-regional Council of elected oi..oWs endorsed the
recommendations of the study.
The management Concept levetop*d in this project (a drainage utility at the
County level) has been adopted by the Snohomish County Council and prograw
development steps sea now underway. Implementation of the program w_I tak,
piece during the next three veers. With rofinement,it is expected that thin
cuncePi will be used for local management and financing Of stormwster programs
throughout the County.
The project officer in Snohomish County was Steve R w in the Planning
Department.
DRAINAGE FINANCE STUDY - CITY OF TAMPA, FLORIDA
Water Resource Associates. Inc. Is presently conducting an intensive analysis of
financing alternatives for the City of Tampa's Public Works Department. The
Department intends to implement a Drmnage Utility !hand ng and management
concept to restructure the existing 13.7 million drainage program which is now
funded from the General Fund.
This Drainage Utility Will be the Drat in the State of Florida, and require* a
detailed investigation Of legal and organisational requirements as well as
financing options. Hector Cyr* will be working closely with the city staff to
ensure that the tinanuing method which is developed responriq • i boot *if to
and long-term needs, and is compatible with related city pollees and systems.
The project officer is Ron Glovannelli.
10 1
DRAINAGE MASTER PLAN IMPLEMENTATION - BELLEVUE. WASHINGTON
As a subcontractor to a major International consulting firm. Hector Cyre is
providing concept design assistance for construction of approxtmat*ly f1.1
million in capital improvements to the City'a draPtage avatem, primarily large
regional detention ponds located along stresms. Previous engineering analysis
is being examined as a basis for the basin management concept, with Mr. Cyrr
aiding the prime consultant's staff in interprettng the data, recommending
priorities, and ensuring that the designs am consistent with the Clty's
policies. He is responsible for the developtmmt of multiple ass evaluations and
recommendations, which include a scenic gatewsy park incorporated into a deten.
tion pond near the City's eas'.erly limits, and inclusion of other passive
recatkinal features (such as Mewing areas and fish ladders) Into other sited.
In addition, Mr. C'yre in rwuponsible for preparing the operations and Main-
tenance Manuel for th* tmprovements being designed under this contract. The
project officer for the City to Pam Hissonnette of the Drainage Utility, and the
partner-tn-charge for R. W. Reek and Associates to Alan Rushley.
EROSION AND SEDIMENT CONTROL ORDINANCE - ISSAQUAH, WASHINGTON
Water Resource Associates is preparing a comprehensive erosion and sediment
control ordinance for the City to improve the regulation of new construction in
the city. A Public Involvement Strategy is also being prepared to ensure that
the various interest groups In Issaquah are aware of the need for and purpose of
this legislation. An Implementation Guide will be provided to the staff to
assist them In implementing the ordinance.
The Director of Public Works, Jack Crumley, to the project officer for this
work.
STORM AND SURFACE WATER UTILITY CODE - BELLEVUE. WASHINGTON
Hector Cyre is preparing a thorough and very comprehensive Code for the Bellevue
Storm end Surface Water Utility, which formalises and codifies the City's
policies related to management and control of drainage both within put'Ic and
private systems. The Code specifies the authority and responsibility of the
Utility, establishes maintenance and operational responsibilities, imWporstoe
the Roodplsin ordinance. provides for eomprehenstvs long-range drainage
planning, improves ociArol over the development of private drainage systems and
private alteration and use of publl^ systems, and sets both civil and criminal
penalties for violations of the Code.
'rho Cod* will receive intensive legal review by a subcontractor to water
Resource Associates to ensure consistency with other related city laws and
policies, and then be reviewed by the staff and the public prior to
consideration by the CItV Council. 'The protect officer It Pam Riseonnrtto.
PHASE 1 STORMWATER MASTER PLAN - WASNINpTON COUNTY, OREGON
Asguositts As a suboohrulid to a major nation*] enllneaMn
the Count Prontrul� the ftnsncial and R moot e
Y'o U nano e 1 firm W*ter is first
otudY rreommendapn s water Plan. Thla naiyda for the rynt
restructuring ^"e d• U implemrntW, Phaoe 1i soon to he coatpletvd�hse of
area wort afQPort4nd.ralnage me nagemert� and mull in a siRmryotint and thn
financing In this rapldly RrnwinR
Hector Cyre a4o conducted a four-month training
and Inspeotora in ""Pal apenc4a in WaahfnRlon Cou
thin oontraot. T Program fur the
overpain he training ntv as "Perot*
reviewed
R on-olte detention Program vnhanced thr staff* s eapa rate element of
erosion and *ad lmenl oantrol system Inatal4tlona on capabilities In
The duMnR �tatat ruction. new dovolopmenta, and in
Drpa eta t officer 1a TOY RiNRon.
halUo 01 the Washington County Pubh, w
In HUbburo, On
orke
DRAINAGE UTILITY BILLING PROGRAM - CLARK COUNTY. WASHINGTON
Hector C➢re anointed the Clark Ce rOo-nu, ounty Public Work■first count dnlMaystem for tM Hurnl Brid Ds ""Plementin
tl
partsreat In
Preparing a water Qe ulUlty in Washln 1" Crook Drainage lttUitY, the s
and
saints]nin Billing F11" wer* evaluated Sl"te. Alternative means of
Provided to the sro4ff.ldiaare analysed; and recommendations
of sfor , recelptlng mendstfo■ for implrmention ware
1'hb ^dtlnR oyat"m began billing in IAlI, and la n
aacellent The by Property owners In the bad* full
r"aob• The Prot officer rrl no, fudY operational with
Director in tM all was John Ootro. J " good collection
Dlrccior Y of Vancouver, Washington k1.Cwho b now Public W
on this Jerry F*y to a! County
orke
Protect an fully knuwlad Roble ,.f water Co n roe Public
works
Associates, work
b FORMWATER CONTROL PROGRAM ANALYSIS KING CC)UN1'Y. WASNINprOq
Water R®�uiromentr ttf a OOloatod in" ".'taRemont, or and
financial
Program the Juanita urn and organizational,
a tructure, t" Creak flan]*. Recommendation,"odor* water monagemant
for detal4doPeratlam proRrsmminl, and rynanvlalsttarn foe organicallond
ProRr"m development by the Count otivam
The Kinnty County staff. Provided a bash
utility throughout
thunollPassed 1e11a4tWn enabling establishment
a raga for Im Qhout the unincorporated plea.an4GaI of county *M In ^Mot of a drainage
an ehhancad dralnaga P January, 1Plt aettfnR the
Shelley Sutton of tho fl roQram.
the Re"nurce Planning udget and !'roRrom Planning Q Divt"wn war" the ryrerm� and Donovan Tracy of
project of or this study.
AZ4"x4A,7Q,i. fate:
1
WATER FILIRATIO4 FACILITY PERMIT ADMINISTRATION EVERETT. WASHINOTON
Water Resource Asetolalus provided permit administration services misted to the
construction of the Atyie $34 million filter plant at Lake Chaplain. Services
included development of the iermit and hearing schedule; preparation of applica-
tions and supportive documentation for local, slate, and federal permltsi and
mpreeentation of the project before agencies, hearing boards, and couneus.
The projec has moeived all necessary permits and approvals, has been bid and
construction is about to begin. Mary Haglund of the Everett Public Works
Department was the project officer, and the work was closely coordinated bt Bruce
Jones, the City Attorney.
JUANITA CKVKK DKAINAOK PLAN AMENDMENT - KINO COUNTY, WASHINGTON
Hector Cy" saaistvd the prime nonsultanl, a major regional consulting firm, in
developing amendments to the physical improvements plan for the Juanita Creek
Basin wet of lake Washington. Specifically. the existing condition of the
drainage system was analysed. and a detailed mslntename and operation plan
prepared for remedial repair of present problems and preventive maintenance and
operation In the future. Coat ealimeles were provided together with a recom-
mended schedule for corrective, work.
Shelley Sutton of the Budget and Program Planning Department was the Project
Officer.
DRAiNAOR MANAGEMENT MANUAL - ARMY CORPS OF KNOINEERS: PORTLAND. OREGO
AS a suboontmetor to a major regional consulting firm, Water Resource
Associates wan responsible for coolant and etruo'.uro review and comment prior to
anbmittai of the led draft to the Corps of Engineers. This review was
completed and comments submitted to the principal contractor for incorporation
into the final text. Principle in charge for the prime contractor was Dick
Warren of Kramer. Chin and kayo of Seattle.
ON-SITE WASTEWATER MANAGEMENT ANALYSIS - KING COUNTY. WASHINGTON
A detailed analysis was conducted of present problcmeY existing programs, end
re.luirementa for improved management of txinventionai and alternative on-site
wastewater systems (septic tank, mound, send filter, and others) In King County.
Alternative management programs were developed and evaluated, and recommenda-
tions prepared, Including nonddaration of staffing requllwments, orgenlastionel
adjustments, and program ..oats. This project required regular briefing end
feedback sessions with a cuboommittee of the County's Policy Davelepment
Commiealon oomposed of interested oitiaens.
Dunne Gordon of the Depariii+ent tit Rudgat ■nd Program Planning was the Projvui
Officer for this study.
AAaY{p. A&A44LAT W.iY M#..
Reference,
Water Rssource Associates, Inc.
Client and Contact Paraon
of
City Water1l UtilrWiLy Pau 9iasonnatte, Nana
city of aver 4er, Storm and Surface
Water ettr Nary Haglund, pro,
Filtration Facility
Clark Manager. Lake Chrplatn
Wor 41 City Bohn Oatrowaktr fpraaan tl y) Direct
lar countyou t or Jerry Fa of Public
Morka, Clark ver ector
City of Tampa, F y Y. Dltactor Of Public
Works
king Cooun yr loridat R, Michael Salmonr Director of Public
or Shellay OvOn Tracy, Resource Planning Division Haad
Washington Y SuttOnt DePartmOnt of Sudget and P t
Works County, Oregon, To rogr,am Pad)
Tony Rhigeiis, Drpartmsnt of Public g
000VALLI4 CITY HALL
Sol s w w,DI"AVlNul
ORYI IA COaV4LIS fMIOON$7310
PUBLIC WORMS Dr►aateSNT fl4,VM11RIN0 DIVISION heal n7."4l
DRAINAGE UTILITY INlOMATION
Thank you for expressing an interest in our drainage utility.
Enclosed for your rmiew please find a copy of the Ordinance
which established our utility, a paper presented at the Port-
land APNA convention entitled "INITIATING USER FEES FOR A
DRAINAGE UTILITY" and several City Council policies which
augment or support our current drainage management effort.
If you have any questions or dvairs additional information,
please, feel free to call mr or our Drainage Engineer, Chip
Ullstad.
ROLLAND EATER
CITY ENGINECR
g$
enclosure$
ccl Drainage a Sewvraqu Sys. Enur.
CORVALLIS ORDINANCE
ORbiNANCI NO, T1• 64
AN ORDINANCI PRUVIDINC FOk '1'111 1STA81,1511MIN'I , 0-1-RAT1ON AND
MAiNiTNANCL W11111N AND N11111N1T Till. fIIN LiMITS OF Till. CITY OF
CORVALLIS OF OPLN DRAINAGIMAYS, CLOSED CONDUIT STOMI DRAINS, CUL-
VERTS, LEVEES, DAMS, DCSiL1ING, D1:1rINTiON, AND RECHARGING BASINS,
OUTTALL STRUCTUR.1, RQUirMI:NT, AND APPURTENANCES NECESSARY, USEFUL,
OR CONVENIENT FOR A COMPLETH STORM DRAINAGE SYSTEM, iN:LUDING MAIN-
TENANCr AND CXTENSiON Or TIIL PRLSiRT STORM DRAINAGE SYSTEM OF THE
CITY: ESTA/LISMING AND IMPOSING .MST AND EQUITABLE CHARGES UPON
STORM DRAINAGE SYS'tCM USERS F'ROSi ('0'A'ALLiS STORM DRAINAGE SYSTEM:
REQUIRING TH! CITY OF CORVALLIS 1'11U011T CMARGE To COLLECT SUCH
CHARGES: PROVIDING FOR INCTNTIVIS I04 CERTAIN DRAINAGE. PRACTICES:
PROVIDING FOR TIIL I'STABLISHMENT OT A FUND FAR SAiD PURPOSES: DE-
CLARING CERTAIN ACTS UNLAWFUL; AND iMPOSiNC PENALTIES.
Many of the costs of handling storm water problems have, in
the past, been charged to the sanitary sewer user while these costs
should more afpropriately be charged to those who contribute to
storm water problem and tha+ impervious area of the property is an
appropriate meaqure of storm water contributions frog, property.
The growing draina a problems hrought about by increasing le-
vels of development within the city has had a direct effect on the
city's storm droinago system and shown the need not only for plann-
ing, de ign, and maintonaace of existing and future contributing
storm draina fee
e systems, but also for measures to lessen the demand
of such development open such systems,
THE CITY OF CORVALLIS ORDAINS AS FOLLOWS;
Section 1. As used in this ordinance, except where the context
other•')iie requires:
(1) "Sin le- family unit" (SFI1) means one or more rooms with
bathroom and Rftchun facilities dosigned for occupancy by one family
such as detached, t0wnh0use5, condominiums, tern lot lint. etc,.
where the units ar•_ sold and deeded as single-family units and hnve
individual water m,ters,
(2) "Multiple .Iwelling unit" means a building or facility can-
sitting of more th one dwelling unit, each such unit consisting
of one or more rooms with bathroom and kitchen facilities designed
for occupancy by lee family.
(3) "Commercial unit" means any building or facility used
other than as a dwelling unit or for industrial purposes and which
has not been conversed to equivalent dwelling units.
(a) "tquivairnt Service Unit" (CSU) mean+ a residential 01 non•
residential liviux configuration estimated to place approximately
equal demand on the city's storm drainage system as a single-family
dwellinp unit, One (1) ESU shall be equal to 2,1SO square feat of
impervious surface>,
(+) "Trailer iotlrt Spaco" monos a space capable of begin occu-
pied by a housotra� loi , served by the Corvailis sewage system.
(6) "Open d,ain newsy" means a natural ur man-made path which
he% the specific function of trsnsmitting n;aiiral stream water or
storm run-off water from a point of higher elcvation to a point of
lower elevation,
(1) "Iwperviais •urfaees" ate those hard surface area% located
upon real property rhtcit either prrvent or retard saturation of
water into the Innd surface, as existed under natural conditions pre-
existent to development , and/or cause water to run off the land
surfate in greater qunntitles of at an increased rite of flow from
Wit Present under natural conditions pre esiatent to development .
Common IMporvious aurfntcv Inclndi•, but are not limited to rooftors,
conrrt•le or asphalt sidewalks, ratkw.iys, patio arras, driveways,
parking lots or storage areas and xraveleJ, nilod, macadam or other
surfaces which similarly Impact the natural saturation or run off
patterns which existed prior to development .
(1) "improved pt:misc$" Nana any arts whist has been altered
such that the run off from the site is greater than that which could
his .orically have beet expected, Such s condition shall be drttr-
m.ned by the iiti rm ineer.
(9) "Special .ar unit" means any single• famili mm '
dwelling or commeressl unit which discharges its storm run tiff water
directly to the Willamette Rive, via a system determined to be and
designated by the city as non public.
(10) "Development" shall mean any pre #tty altered in appear-
once by removal of vegrtatinn, grading of the ground surface or con-
struction of a stricture or impervious surface.
(11) "Run off control" is any mean$ approved by the City Lngi-
neer by which the peak rate of storm water run off from developed
land surfaces is reduced.
((12) "Drains o Management" means the handling of storm voter
run a!f so as to is aizt its adverse impacts upon the public health,
safety, and welfare; upon property, public r private; upon local
economy and aestheu.s; A "drainage management utility" is s body
of ordtn►nce3, policies, practices and capital improvements b, which
this sin is aceompl4 ,hed.
Section 2. rursuent to the general laws of the state of Oregon
and th'e 'powere granted in the charter of the clty of Corvallis, the
couneit of said city does hereby declare its intention to acquire,
own, construct, equip, oporatt and maintain within and without the
city limits of the city of Corvallis, O,sgon, open drainageways,
underground storm drains, oquipment and nppurtonances necessary, use-
ful , or convenient for a complete storm Jrainage system; and also
including maintenuai.o, extension and reconstruction of the present
storm drainage systum of said city; to minimize by suitable means
$aid system's contr.bution to flooJing; and to svek the cooperation
of Benton County and of other municipalities within the planning
area in minimizing the contribution of all such system, and other
sources of accoloratrd run off to said floodlnc.
(a) The imprevtmont of both public and private storm drainage
facilities throu,jt or ad)acent to a now development shall be the re-
sponsibility of the developer. Said improvements shall comply with
all applicable city ordinance.., policies and standards.
(h) No portion of this ordinance or statement herein or sub-
sequent council interpretation policies shall relieve the property
owner of assessments lovied against their property for public (sell•
tty improvement, proie, ts.
(.) it is the I,olicy of the city to participate in improvements
to storm dra0.1R facilities when authorized by the City Council.
To be conaiderti for err*oval by council a facility must:
(1) be public; and
(1) be oVisa)or benefit to the community.
(3) service an area which generate:; at least SO cultic feet
per seetwid of storm rile ,or usimg enmtemporory method%
mfr•ug)ws+ ray! 1 .111 Oat lun• aestp/able to the City
limpInver; of
(4) iC a p))wd .i '.l,.m. hr a dr•.Ir..n t•qulv.ilont to at Ira%t a
sn Inch ili.im. let k Ire 111.11 %,%nt it-It, pi pr; III,
(5) he a Fahabtiitatuni/rvpla,esurol ui rxi%tutg pal+lic facill•
ties.
(d) The city shell 4.1111tliin all puhlic %into drainage facili •
ties located within city owned land, city right •af-way, and city
casomcnts, public fatuities include hilt are not limited to;
(1) open dralnagewny% serving a drainage ha-tin of at least
100 acres,
(2) a pi e11 drainage system and its related appurtenances
which has been designed and constructed expressly for
use by the general public;
(3) brldges;
(a) roadside drainage ditches along unimproved streets;
(S) flood control facilities, (levees, dikes, overflow
channel%, detention basins, retention basins, dams,
pump stations, groundwater recharging basins, etc. ) that
have been deigned and constructed expressly for use by
tilt, general puhlic.
facilities tint qunlifying a% public facilities include hot
Are not limited to:
(1 ) private parking lot storm drains;
8) roof, footini!, and area drains;
3) drains not de%iµnud and constructed for use by
the general puhlic;
(a) be
swap•% which collect storm rater from a
basin le -, than 100 acres;
l neces% drive culverts
Section 3. There it hereby levied and imposed upon all premises
which lovT e Then improved within the City of Corvallis just and equi-
table charges for storm drainage service or subsequent service maim
tetiance, %cration and extension; and to estoblish a storm drainage
fund for t�c foregoing purposes.
Section 1. 1ha1 the void charge% shall he collected with the
manthTy xa1C,' bill of waicr u.en, hillcd with sanitary sewer for
those connected to sewer alone or billed alone an storm drainage
charge for those u•ers not connected to aad/or not chervil for city
water and/ar sanitary sewer.
Section S. Such chargv< shall be paid monthly by those liable
thoreT6 a unrp laced in a Storm drainage Fund into which all of said
charges wo cullected shall be deposited and kept as a fund to be
used only for the purposes stated heroin.
Suction 6. The City Council has determined that property not
used oot,s)iij7e famih dwelling purposes is furnisheJ service in
proportion to the amount of the property's imperviouk
surface, and
that for e 11 t,74o square feet of Impervious surface. the said pro.
porty I% furliisheJ service egtllvalent to that furnished a single
family unit and that the minimum service charge shall be that osta•
bushed for a single family tuiit.
Section 7. The Iollowing rnty% are horohy established for all
prop*A —01 oaecpttng I. • Oregon 5taty university Campus.
Single gamily Um Per Monti, $1 .60
Multiple family 111kit per f.Sll
to the ncarr%t n. 1 ISII ver Mont It $1 ,60
Commercial and iudn>I tral
pp or 11SU to the acArc%t 0. 1
1'.SU Per Month $1.60
Improved Premise, or Lots
peU r ESU to the nearest 0.1 Per Month 11 .60
ES
Minimum charge per user per Month 11 .60
Special User Unit per fSU to
the nearest 0. 1 ESU Pet c ,th l "u
Section 75, The fallowing rates are hershr established fur
the O cpo`n '3"s o Unive ,ity Campus:
North of Stadium Avenue and
east of 26th St. per ESU to
the nearest 0. 1 ESU Per Month g1.20
South of Stadium Ave. and
west of 16th St. for ESU
to the neatest 1,, ESU Per Month s0. 40
Sea ton $A. Thp foregoing rate% me ' he reduced for a eruperty
where rpprovrrun oft control meAsures have been taken; analysis
shall be on a cave by ,cnAe hasis,
Section sh. Ni, itch rate-reduction +hall apply to a roperty
where olor`�TTn'ancial .incentives for run off control haT1ve Ceen given.
Section 0. The City Shall develop A•�d adopt policies stan-
dards,uu77T"nana U1 incentives to promo".c, regulate and saminister
the city's Drai^age .mAnagemont Utility,
Section 16. The city %hall adopt erdinAnces, polict0s and
etanda—M-1 o regulate storm run off from developments. SAia regula-
tions shall provide for the following minimum tv4uirtments:
((11 The reduction of peak run off;
(2) The esta611%hment of A maximum dlscharge rates;
(�) The control of the Quality of water being dis
charged both luring and after construction;
(4) The construction And maintenance of facilities
necessary to accomplish above requirements
ection if. tv%:ry person suhJOct to a charge provided herein
shall pay a some, when due, to the City of Corvallis,
Section 11. tiny charge duc herounder which shall not be paid
when uo may`bo rdcovored in an action at law by the city of Corvallis.
So"iioil IS. in nddltinn to any tither remedies or penaltirs
�rovidcti by Ili'1% or any other ordl"atne ai ihv City of Corvallis,
allura of any user of water survive within the City of corvalis
to pay said charges promptly when due shall %ui,iect such user to
disennt hninnee of water service and the city Kiilager of the cite
Is hereby ompowered and directed to enforce thin irovislon A% to
any and all delinquent users. The employcc% of tU city shall
at all reasonable times have access to any premises served by the
city for inspection, repair or the enforcement of the provisions
of this ordinance,
Section IA, The earliest imposition of toe provisions of
We b't'drai cc is ncccsaory to derive Recoils. y rovenuen, to pro-
"to falr,lo•.s by inposing costs upon propert.o, which cause ex-
Rates to b incurred, end to prescrvo the peace, health and safe.
p
ty "f the t,- lic. Accordingly, an emergency is declared; and this
ordii.once shall go into effc,:t immediately upon passage by the
Council and approval by the Royer. The storm drainage rates pro-
vided in this ordinance shall be in effect nil at hills rendered
on or u/ter Jamtary 1 , ltlte,
Section IS.
jral`7Cii peovi,ied in OR5 01,:25, when %term drainage charges
are not raid 1,1W due, the amounts thereof together with interest
at the statutory rate from the due date shall he certified to the
assessor of the appropriate county for collection.
(b) The liability for all accounts billed for storm drainage
%hall he that of the owner of the property.
(c) The City Rocerder %hall tokc any action necessary, tinder
apprupriate statutes, to enforce delinquent storm drainage charges
as a licit a sinst the property.
(d) The charge for 1S days or less of service upon new
account or upon he clawing of an account %hall be one,half the
applicahlc monthly charge.
pARSIU by the Pmuicil this - Jth day of Ilipruct �W IR'tt,
ApI+ROVI:11 by the Raynr this Ifth day of A"WIt 1078.
111feetive this 12tti tiny of _ Auyutt y� , ATg,
yet
ATTEST:
..� y % rcr
INITIATING USER FEES
FOR
A DRAI3AGE UTILITY
ROLLAND BAXTER, PE
CITY LNGINEER
CITY OF CORVALLIS, OREGON
SEPTEMBER 27, 1979
a ataonliu.tnt►
Utility user tees a:e not new or innovative. Public works
officials have utilized utility user toss for decades to finance
services provided by local water and sewer utilities. The initia-
tion of a user fee for drainage aorvice is, however, relatively
new and has been nuccesofull•, accomplished by iaw. The city of
Corvallis, w&*von is among those few agencies which has success-
fully implemented a drainage utility and established monthly user
fees.
In August of 1971 the city of Corvallis, a university communi-
ty of 40,000 population, passed legislation establishing a drainage
utility and providing for drainage user fees. The user fee por-
tion of the legislation wa■ effective January 1, 1979 and billings
have been mailed monthly to utility users sins the January I
effective data. In nearly eight months of operation, the income
from user fees has averaged approximately $32,000 monthly or with-
in 1 percent of the projected $33,300 monthly income. All utility
users have paid the user toe and the City has not had to resort to
the use of penalties provided for within the legislation.
Initiating a user fee is only a part of the process of initiat-
ing a complete and comprehensive drainage utility progrc.- The
user fee is simply a mechanism for public works officials to equit-
ably distribute the costs of operating a drainage util+.ty to those
who use or benefit from the service provided. There are alternate
methods of W atributing the cost bt today I will detail for you
the approach used by the city of Corvallis.
LMAjj'Y zHE ftm
As the first step in initiating a drainage utility, it is
essential that the needs of the utility be identified. This process
can be very complex or relatively simple depending on the capabilities
Pays 2
of an oryanlastion and the desires of a community. whether simple
or complex, the process should be thorough, accurate and well
organised since the facts, figures, and other material developed
during this process will be used to explain or detail the utility
for governing bodies and local citizens.
Recognising the difficulties in establishing a nw user fee,
Corvallis chose to utilize the services of a consulting engineer-
ing firm to assist in identifying its drainage utility needs.
Working with the City's administrative, engineering, and maintenance
staff, the firm of Kramer, Chin a Mayol Seattle, Washington, iden-
tifiad utility needs in three principle categories (1) administra-
tlon,'planning/•ngineeringi (2) operations/maintenancs and (1)
capital improvements. tech principle category was reviewed in
detail with responsible staff supervisors to determine existing
levels of service and existing funding sources. Deficiencies were
identified and desired now activities or improved levels of service
established. TPe monetary resource* necessary to carry out each
activity or task was then calculated for the level of service
established. For Corvallis, the annual income necessary to sustain
the management, engineering, planning, operation, maintenance and
capital needs was established at $400,000
Kramer, Chin a Mayo also laid the groundwork for the develop-
ment of utility rate structures by suggesting several alternate
rates which might generate the needed income. The repor- suggested
the development of a service unit (later to be called an [SU or
equivalent service unit) and addreaa*d such concepts as zones,
surcharges, and special benefit charges. Actual development of a
rate structure was beyond the scope of the 904 report and, there-
fore, no specific rate or rate structure was developed by the firm.
The process used by Corvallis to identify utility needs was
relatively simple and was completed at a cost of lees than $20.000
including consultant fees and staff time. The availability of a
relatively detailed system inventory and a nur,ber of drainage evalua-
tions was helpful in keeping down costs and avoiding time delays.
Page i
The report was coepl.ted by KCN in May of 1977 and after several
public hearings, the utility concept was endorsed by the City
Council in July of 1977.
The necessity of this first step - identification of need -
cannot be over amphasiaed. Time must be taken to itemise the
services to be provided by the utility and the eco,tomic resources
necessary to provide the services. Governing bodies and citizens
will require this information and intist upon its accuracy. The
information and data developed should :w aesembled in a form suitable
for public distributlin and material ■ham J be shared freely with
citizen groups, realtors, homebuilderm, the Chamber of Commerce,
and other groups and individuals.
OEYELaP.A&U. STRUT
Once the cost of the services to be provided has been identified
it is possible to begin development of a rate structure. The initial
step in this process requires a number of assumptions to be mdo or •givens"
established. First, user categorize must be established, Corvallis eI , to
classify all users in ens of three service ategortest (1) "Is family residential;
(2) multiple family residential; and (7) oanearcisl/industrial. Second, the
basis or unit of measure for the utility charge must be established.
Corvallis elected to base utility charges on impervious surface
area. Third, the size of the minimum service unit must be set.
Corvallis elected to establish the single family residential
dwelling as unity or one Cquivalent Service Unit (PSU) .
With these assumptions and the knowledge of the amount of funds
to be generated, it is now possible to develop a rate. Since the
single family dwelling unit is unity or one 6SU, the amount of im-
pervious area attributable to one CSU must be established. A
statistically random sampling of single family units within the
community was taken and each sample physically measured for im-
pervious area. The average impervious area of the sample was cal-
culatod at 2, 732 square foot and this figure was subsequently
rounded to 2,750 square feet for use in all subs-,4uent calculations.
Page 4
Following the sampling of single family units, a statiscally
random sampling of multiple family and commercial/industrial
accounts was conducted. Again, each sample was measured for im-
pervious area and an average for the sample calculated. In the
case of the multiple family services, the average impervious area
was calculated at 11,100 square feet or 4.0 ESU's. For commercial.
industrial services, the average impervious area was calculated at
14,000 square feet or 12.5 ESU's.
Armed with these finures, it was a relatively simple task
.o multiply the number of service accounts in each classification
by the calculated average ESU's for that classification. A factor
Of safety was allowed for both the commercial and multiple family
accounts in the extension calculation. (See Table 1) . Since
Corvallis owns and operates the sanitary sewer and water utilities
and since the service boundaries of all threw utilit+es are identi-
cal, the total number of accounts in each category was easily
established from Finance Department computer records.
TABLE 1
ESTIMATED EQUIVALENT SERVICE UNITS
EQUIVALENT NUMBER OF TOTAL FACTOR ADJUSTED
OSSIFICATION SERVICE UNIT ACCOUNTS ESU FOR SAFCTY TOTAL RSU
Single t'amily 1.0 7,076 7,076 1.0 7,076
Multiple Family 4.6 1,070 5.116 0.9 4,622
Commercial/Indus- 12.5 089 11,112 0.65 99/45
trial
TOTALS 9,015 21,124 21,1/1
Having now established the total number of equivalent service
units (ESU's, to be billed, it is simply a matter of dividing the
income to be generated (t400,00C) by the number of equivalent
service units (21,143 ESU's) to establish an annual service fee
($16.92 par ESU). A further division by 12, converts this figure to
a monthly service fee ($1.58 ESU/month) . Corvallis ultimately
rounded this monthly figure to $1.60 per month per MI.
Page S
SLEI r.LUM ALMN
Now that a specific rate has been calculated, an implementing
Ordinance or other appropriate legislation can be drafted. The
legislation should be drafted by an attorney and should receive
widesp *ad distribution and review. Workshops should be scheduled
for governing bodies and other interested citizens and one or more
public hearings should be held.
As a minimum, the legislation should include the followings
• A definition of terms and phrases.
• A declaration of the City's intention to own, operate,
maintain, and construct a stormwater drainage system.
` A declaration imposing just and equitable charges for
storm drainage service.
• An establishment of a separate storm drainage funa.
A statement of utility rates.
• A statement allowing the adoption of rules, regulations,
standards, and policies to regulate and administer the
utility.
• A provision for penalties.
• An effective date.
The work of developinq the specific rate structure and imple-
menting legislation was accomplished by City staff. The staff pro-
posal was transmitted to the City Council in February, 1978, eight
months after the City Council gave their initial support of the
drainage utility concept. The City Council and various interest
groups spent an additional six month% evaluating the proposal and
making changes, corrections, addition&, and deletions to the staff
proposal. Legislation was finally adopted in August, 1978.
1N1.I16IE.$11.LING
Depending on the resources available, it will likely he from
four to six months, or even longer, after adoption of legislation
before utility bills can actually be rendered. Corvallis adopted
legislation on August of 1078 and began mailing bills in January,
Page 6
1979 or four months after passage of the legislation. The legisla-
tion as passed purposefully provided for a January 1 initiation of
billings to enable staff to initiate the billing process under the
most favorable conditions possible.
Once the legislation was passed, temporary help was hired to
assist in the physical measurement of the multiple family rind
commercial/industrial accounts. Whenever possible, Building
Division records, aerial topography maps, and County Assessor's
records were used. Individual account packets were established for
each account and support data and calculations kept in tht packet.
Staff from the Public Works Department worked closely with repre-
sentatives of the !'inane Department to re-desiqn utility bills
and write computer programs.
In initiating billings, it is impo-tant to allow time between
adoptdon of ls�-'slation and the rendering of the first bills.
The first bills, for psychological reasons, should probably be
mailed during the wet season and should be for one billing period
only. Corvallis also mailed a short notice to each user one month
in advance of the first bill advising users of the new user fee and
providing the name of a staff person who could be contacted with
questions. Special training sessions were held for staff members
likely to receive inquiries and logs were kept to identify problems
and secure feedback. Each cycle of bills brought inquiries and
calls during the first two months of operation. A significant
reduction in calls was evident after the third month and now,
eight months later, calls or inquiries are not significantly higher
in number than those for the water or sanitary sewer utility.
The total cost of initiating the billings process was approx-
imately $32,000. one new permanent staff member was added and five
temporary employees were used for four months. City staff completed
computer programming work and designed new billing forms. Billing
forms were commercially printed.
P• go 7
COKl IIS i nw
,.orvallis was successful in initiating the user fee for a
variety of reasons. Important factor■ include the commurity's
willingness to try new or innovative approaches to financing munici-
pal services and the fact that the City was well prepared with facts,
figures, and other pertinent data to demonstrate the need for the
drainage utility. Important also is the growing recognition that
a drainage utility with user fees makes sense and is equitable.
With the community's willingness to support new ideas and with the
preparedness of the City staff, user fees for a drainage utility
have been implemented in Corvallis, Oregon, enabling the City tc
equitably distribute costs of operating the utility and to improve
the level of service provided.
�•`� CORVALLIS CITY HALL
Sol S N MADISON AA N,d
orEw Is COAVAi US OatoON V)7C
PUBILK MOLARS 01PARTMENT /ENOINEE111N0 DIV13ICN swW 117-6641
February 22, 1978
TO: PUBLIC WORKS CO%NITTF.E
Transmitted herewith is a report prepared by the Public
works Department relating to a Drainage Utility. You will
recall that Council directed staff to begin developing data
and proposals which would lead to the eventual initiation of a
drainage utility. This is the first step in that direction and
will undoubtedly be followed by public hearings, ordinance
revisiuns, committee work-sessions and similar activities.
The key recommendations in the attached report are:
(1) That 2,7S0 square feet of impervious area he
selected as the basic service ur.it (ESU)
(2) That the billing rate be $1 .60 per month per
equivalent service unit (ESU)
You will also find attached a draft copy of a proposed
ordinance creating the drainage utility and setting rates.
This draft has not been reviewed by the City Attorney and should
be considered a working document only. It is anticipated
that Council will wish to secure citizen input and give careful
consideration to this ordinance prior to its adoption.
The proposed drainage utility ordinance is an important
but new piece of legislation. It is also a concept not used
widely on the west coast but is A concept gaining much momentum.
because of the newness of the proposal , it is su gested that you
adopt a review schedule which provides for a deliberate and
thorough evaluation process.
Very truly yours,
C. Dean Smith
City Manager
RS/scr
attachments
INTRODUCTION
DACKGROUYD
As early as 1975, City staff began collecting data on a
possible storm drainage systen user charge or storm drainage
utility. In November of 1976 the Public Works Committee met with
staff and representatives of Kramer, Chin and Mayo,. int. , Consult-
ing engineers, for the purpose of discussing the feasibility of
undertaking a Drainage Managemont Planning Study. Subsequently,
the City Council authorized a stuay by Kramer Chin and Mayo at
a cost not to exceed S16,Doo.
This action by the City Council was initiated because of
the growing drainage problems brought about by the increasing
levels of development within the Cit> and its direct effect on
the City's storm drainage system. The City Council has been con-
fronted with the realization that if something is not done soon
to generate revenue for needed expansion, maintenance, improvement
and planning of the City's storm drainage system, the City will be
faced with increasing costs due to damage to public and private
property.
In May of 1977 after a review of City drainage management
practieea, KCM Environmental As sac istes, Inc. , submitted a draft
report. Th ! report included an evaluation of caritsl . maintenance
and administrative needs and recommended an approximate monthly
billing rate i.ecessary to support the identified needs, The report
concluded that the City could legally establish a storm drainage
utility and col,ld make monthly billings in the form of ■ storm
drainage system user fee. The City Council then reviewed the
report , sought input from interested citizens and in July of 1977
directed staff to proceed with the development of specific recommenda-
tions leading to the implementation of a utility.
PURPOSE AND SCOPE
The purpose of this report is to provide the City Council
with supplemental information and to suggest an implementation
schedule. Since the consultants work was not based on specific
measurements in Corvallis but, rather, was based on the firms
axpeiisu..e with other agencies, it was deemed appropriate to
make sufficient measurements locally to verifv the accuracy and
validity of the consultnnt's assumptions end subsequent
recommendations.
The s(ope of the report is as follows:
(1) Sample potential billing cater tes and determine
the site of an ESU (equivalent service un.t) in
Corvallis.
(2) Compare the Corvallis ESU to thosa established by
other jurisdictions.
(3) alcul►te a billing service rate based on the
c l, ulated Corvallis ESU.
(4) Compare the billing or service rate to that
suggested by KCM Environmental Associates.
(S) Recommend a rate structure and suggest an implemen-
tation schedule.
SERVICE UNIT AND RATE DPELOPMENT
ASSUMPTIONS
in order to generate ■ service unit definition and a unit
rate charge, several assumptions must be made. KCM Environmental
Associates in their report made several very important assumptions
but did not specifically identify the assumptions made. The
primary assumptions which are important to rate development are:
(1) There will be three categories or classifications
of service unit types: single family, multiple
family, and commercial/industrial.
(2) The single family dwelling unit will be the basis
of other charges, i. -. , a single family dwelling
will be equivalent to one billing unit or one
service unit.
(3) The rates charged for service will be based on
impervious area.
One conclusion draw., by LCM Environmental Associates
which is critical to rate development is the amount of
revenue required. Based on their review. KCM recommended
an annual income of about $400,000 to fund the planhing,
engineering, administration, maintenance and capital needs of
the system. The amount was thought sufficient to initially
fund the effort until such time as engineering and p`.anning studies
were completed and capital needs more ackurately identified.
SERVICE UNIT
Several go%ernmental jurisdictions in the state of Washington
have adopted rr are considering legislation creating a storm drain-
age utility. In the course of developing this legislation, con-
siderable date relating to storm runoff and billing rates has heen
developed. KCM Environmental Associates makes reference to this
material and staff has reviewed it at considerable length.
In these studies, it is interesting to note the similarity
of the data gathered and the conclusions reached. All communities
for instance, determined that the average impervious area of a
developed single family lot was about 2800 square feet. It was
further found that multiple family complexes averaged about 30,000
square feet of impervious area or about 10 times that of single
family lots. In the use of Bellevue, Washington, it was determined
that, foi billing purposes, 3,000 square feet of impervious area
would be defined as a unit. Single family residents were judged
to all be substantially equal and, therefore, billed for one unit.
Impervious areas on commercial and multiple family sites were
measured by means of aerial maps and computers capable of "reading"
the! maps. The total impervious area was then divided by the
equivalent unit sire (3,000 squaw feet in the case of Pellevut)
and the number of equivalent service units thereby determined.
In their report on the Corvallis Drainage Management
Program, KCM-Environmental Associates recommended the adoption
of 3,000 square feet of impervious area as the basis for billing
single family units. Other land uses (multiple family, commercial)
would then be billed on the basis of total impervious area
divided by the single family equivalent of 3,000 square feet.
CORVALLIS ESU SIZE
To verify or further refine the consultant 's recommenda•
tions, it was judged advisable to conduct a review of local
conditions. The putpose of such an evaluation being to
determine if, in Corvallis the average single family dwelling
had approximately 3,000 square feet of impervious area and if
the average commercial or multiple unit represented approximately
30,0'0 square feet of impervious area.
Staff began by selecting ten (10) detached single family
dwelling units and making a physical inspection and measuroment
of each. Drawings were made of each property and the total
impervious area added. The total impervious area of the ten
residences were then averaged and the average impervious ■re■
was found to be 2,7t1 square feet.
Next, using water and sewer account billint sheets, fifteen
(1S) multiple family and thirteen (13) commercial properties
war* statistically and randomly selected. These samples were
evaluated using aerial maps, building records and on-site
inspections and the total impervious area determined. The
average multiple family property had 13,100 square feet of
impervious area or was equal to about 4.8 single family units,
T' e average commorcial property had 34,000 square reet of
impervious area or was equivalent to approximately 123 single
family dwelling units.
The City's water ■nd sewer billing accounts were judged
to be an accurate record of the total number of residential
and comn„-rcial properties since almost all properties receive
or subscribe to these ssrvices. A review of the accounts
indicated there were 7,076 single family accounts, 1,070
multiple family accounts, and 889 commercial accounts.
Multiplying each by their approximate equivalence to the
single family unit (ESU) revealed a total of 23,SZ4 equivalent
service units (see Table 1) .
TABLE 1
APPROXIMATE NUMBER OF EQUIVALENT SERVICE UNITS
-----------------------------------------------------------
EQUIVALENT
SERVICE NUMBER OF TOTAL
CLASSIFICATION UNIT ACCOUNTS ESU
-----------------------------------------------------------
SINGLE FAMILY 1.0 7,076 7,076
MULTIPLE FAMILY 4.8 1,070 5,136
COMMERCIAL 12.5 389 11,112
TOTAL 9,035 23,324
-----------------------------------------------------------
The total of 23,324 ESU (equivalent service units) coin
pares very favorably with the total of 23.300 projected by
KCM•Environmental Associates. The KCM total , however, was
projected on a smaller number of single family service units
(6,300) and a larger number of commercial and multiple family
service units (17,00o). This difference does not affect the
rate to be charged but does indicate that 1n Corvallis, KCM's
sssumed percentage of single family properties was lower than
actual.
SERVICE RATE
In reviewing regulations and ordinances of other
communities as well as planning literature, staff notes that
"credits^ are a common incentive used to encourige drainage
management techniques which impound storm waters. These
incentives are not adaptable to all developments and are
generally economical only for the larger commercial or multiple
family developments. To allow the use of incentives In
appropriate situations staff applied factors to bot'i the
commercial and multiple family totals to reflect a reduction
in the number of service units to be billed and :he subsequent
reduction in revenues. A 10 percent reducticn was applied to
multiple family units and a 15 percent reduction was applied
to commercial units.
With the incentive fa:tor Applied, the number of service
units to be billed was redu:ed from 23,324 to 21,143. The
billing rate was then calculated as follows!
ANNUAL INCOME
_TO RE GENERATED IfOo.000 S18. ➢2hrrvioa unit
TOTAL NO. ESU 22,143 per year
or
$1. 38/month per earvioe
wn{t
RCOMENDAT IONS
SERVICE UNIT
The calculated average impervious area for single family
residences in Corvallis was somewhat lower than that reported
by other agencies but was within the range expected, It is
recommended that the calculated average of 2,732 square feet
be rounded to 2,750 square feet and the equivalenr service unit
VSU) be established as 2,750 square feet of impervious area.
SERVICE UNIT CHARGE
It is further recommended that the equivalent service
unit charge be established at $1.60 par month per service unit.
This figure is rounded up only slightly from the calculated rate
of $1 .58. The $1.60 rate is projected to generate approximately
$400,000 per year to fund administrative, billing, planning,
engineering, maintenance, and capital improvement activities.
IMPLEMENTATION
The following schedule is proposed for implementing the
Drainage Utility Fund and related activities:
(1) Review and recommendation by Public
Works Committee Feb. 29, 1972
,
(2) Submission to Council of proposed
rate structure outlined above Nor. 6, 1978
(S) Submission to Council of ordinance
establishing utility and rate
structure March 6, 1978
(4) Council hold public hearings qr. S 6 17, 1978
(5) First reading of ordinance establish-
ing utility and rates MAY 15"1978
(6) Second Reading of Ordinance establish-
ing utility and rates June 5, 1978
(7) Staff to develop necessary support
information s vlculate rates June 5 - Aug 1,1978
(8) First billing mailed November ti 1Q-F
Ra�lri i.i
kUv 5 377
CITY COUNCIL POLICY MANUAL
CITY OF CORVALLIS
Public Works
jlW Plain F-lq�d polity Adopted June 6, 1977
it shall be the policy of the City of Corvallis to adopt and imple-
mant the goals, guidelines, policies and standards of the Federal Insurance
Administration for the National Flood Insurance Program as published in
the Federal Rppister on October 26, 1976, end as hereinafter amended and/
or supplementd.
The
the Mary'soRiverng standards Flood Plain exclusiveo0fathenMillrRRaate. east of as City licy the for
Southern Pacific Railroad tracks
(1) Davelopment shall not be allowed in the Mary'% River
rloodway.
(2) Development of any appropriate We may be allowed within
the fringe area of the Mary'% River Flood Plain subject
to compliance with items 3-4 listed below. The total
development and filling of the fringe area shall not raise
the 100 year base flood more then 0,: foot,
(3) Any proposed develoWont within ne Mary's River Flood Plain
must satisfy, with a detailed ngineering evaluation, all
re9uiraients set forth by the L ovation and Grading Ordi-
nance,
(4) The U.S. Army Corps of Engineers' February 25, 1977. and
May 5. 1117 correspondence and any suhsoqu-nt amendments
to these letters by the Corps shall be used as base data
for the 100 year flood and 0,2 foot floodway rise bounda,y.
(5) A map showing the latest Corps of Engineers data shall be
maintained at the City Engineering Office.
tlN�t;VnU
7 19►5 Clis COUNCIL P0I ICY NAhuAt
leis^%anel pease-
CITY Of CORY.at1S
Public Works
Open Onln�q_awa,Xs Adopted April 7. 197s
it shall be the policy of the City of Corvallis to allow open. nztisral
drainageways as integral parts of the City's storm water collection system.
This policy shall apply primarily to drainageways in new subdivisions or
new developments ' it may, under %stain conditions, be applicable to certain
other, drainageways.
Open, natural drainageways must, as a Condition of qualifying for this
policy, poet the following minimum criteria:
1. be natural as opposed to aunmsde and
2. Service a d-ainageway area in ekcess of 103 acres or have a
design flow in 2cits of SO cfs.
When upen natural drainageways qualify under this policy. the developer/
buildorlowner lherein after referred to as owner) shall have the option of
either providing for the open nrainsge:aay as set forth in this policy of con-
structing a suitable, piped collection system complete with appurtenant
structures. Should the owner elect to construct the piped collection system,
the facility shall be constructed to adopted standards and shall be of suffi-
cient capacity to accommodate future storm flows The City shall, upon
completion of either the piped or open system, %ceept the facilities for
maintenance and ownership.
Should the owner elect to construct the open, natural drainage.wy system.
he shall impro a the drainageway and shell dedicate the improved drainageway
to the public. Improved drainageways are to be dedicated with sufficient
abutting property to insure (1) ingress and ogres%, (2) an at 'ity to maintain
the facility, and (3) the viability of a functional, natural en space. Where-
a homeowner association exists, the City may elect to allow did'. =geweys to
be held by the association in conjunction with other common areas.
The level of improvement required on each drainageway shall be determined
by the City Engineer• The following factors shall be considered in establish-
ing the level of improvement:
I. The ultimate flow capacity of the drainageway
2. The land form
J. the land u%e
4. land values
S. The need for bank or, slope protection
6. Ingress and egress requirements to insure a vafntenance capacity
w., r
7. Ertrot of open space and proxir,it) of building structures or
other Ivrovanents
A. levrl or amount of inundation anticipated.
1u 9,neral, it shall be the palicy to requirr a higher degree of improve—
cent where channels are realigned or structures or other facilities are placed
in close proximity to the drainage.way. P lmwer degree of improvement shall be
required where the natural aspects of the drainsgeway can be reasonably main-
tained snd where structures are placed in such s rinner as to ensure a func-
tional open space. Where the land fora has features such as benches, bluffs,
or well defined stable waterways and the thannel has capacity to carry the
future storm flows, the width of the dedication can be relatively narrow+. But.
where drainageways cross relatively. flat land uithaut w:•11 defined channels
end where banks are periodically overflowed, a relatively wide dedication will
be required. Dedications will generally vary fro-n 50 to 150 feet. Detailed
Improvement standards have intentionally been onitted from this policy state-
oent as it is the intent of this policy to insure maximum flexibility for-
the owner and to seek individual solutions to each situation or development-
Should an owner wish to appeal the determin?lion ra<:e by the City staff.
ne shall have the right to mike such appea to :h:_ public storks Committee who
shall hear objections and make reco-crndations to the City Council_ The City
Council shall hav; final authority.
CITY COUYCIL POLICY MUM
CITY Of CORVALLIS
Public hbrks
Construe ion gd;acent to Qretnagewixs, Adopted August 1, 1977
As development of lands in and adjacent to the City tKcurs, changes in the
character of storm water runoff are anticipated. Generally, as urbantration
occurs, the importance of open, natural drainageays will increase as will
the storm flows the drainageways handle.
it is not the intent of the City to prohibit construction in or adjacent to
natural drainageways. It is, however, the intent of the City to control
construction activities in a fashion which will protect the structural .
Hydraulic and aesthetic integrity of the drainageways. In considering
construction activities adjacent to drainageways, the City shall consider
impacts both upstream and downstream of the proposed development.
further, the following sta-.talds fm' excavation and grading operations in
and adjacent to natural l"A inageways are adopted:
(1) Dedication widths of drainageways and the criteria used to
distinguish a natural drainageway shall be In accordance
with the City Council 's open drainage pal icy adapted April 7,
1975, as amended or hereltter amended.
(7) No tructores will be allawld within a dedicated dratnagnwy
and/or easement.
(3) Excavation and grading operations will be allowed within a
natural drainageway and alonn adjacent land If all requtroaents
set forth ill the excavation sad grading ordinance are complito
with to the satisfaction of the building official.
(4) Excavation and grading operations and the placing of structure on
land adjacent to drainageways where no hePIAgeway f structure
or easement exists, shall be analyzed by the building offietal
assuming that eventually an adequately sited drainageway dedication
or eastnent will be acquired by the City.
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1 Sturm Drainage
1 Planning
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Molitor.Chin A Movn,U v.
{{ KCM 0974-01 99
December 11. 1940
1
Mr. Warren C. c.onnuon. P.E.
t Direetor of Public works
r'tty of Renton
Muiicnal Building
'100 Mill Avenue South
Renton. Washington 1e055
References Ptwfadmal Swwew Prop" for
Stone DMWAF PlaM"
Deer Warrant
tThe firm of Kramer. Chin 6 Mayo, ins. (KCM) Is pleued to
submit tan ropts of our reapr se to the City of RantonY
"Quest for proposal fox the aub)act ,x0)ect.
Our exartanw in the field of drainage planning, design and
mrstruction management totals approximately 15 years
with specific ernphests an progressive drainage management
since the early 19"0a. Over ilia years Kt'M has assuiteil
many Northwest agencies and Communities in their dovelop-
tmint Of master plane and:or utilittes. Ttuse (noludai
City of Bellevue City of stoilacw'm
City of Bellingham City of Mountlake Trrrntw
City of Corvallur, Oregon king Countv
City of Albany. Oregon ('lark County
Oity of Mercer Island Pitriland tarps of Engineam
tIn each ase itnancia: and management analysis, along with
the normal technical and hydrologic analvees of drainage
muter Planning, was an integral part of cur effort. It is
critical that itw nanagament of drainage be coordinated
with the other existing uttlitlee of the t'ity, such as 4hput in
the overall mty planning, operation and maintanifiri
budpbng and fmsnc,tig, Since dairesp planning is based
upon land use and growth patterns within a jurudlotfon.
KCM" appr0s011 to drainage master itanntrig �s to involve
Plowman and ecunumuta sc that the Desparetian of the
master plan and Capital improvement plan is tatlow t:, the
projimi growth and development of the laity.
11P rOrf f.rC.:x
�.wrSR N+MM,:n wAw
What is a
drainage utility?
METNhhS nK +UNf3�k�
Kramer. Chin
�b,w, ttc Mayo, Inc.
FORMATKIN Of A DRAMAtit
urairr
TYPWIAL VRRAN NY0PO1 ,k,a,
CURRGNI M 11 i
iF PFRAL LAW
is
p kL811WL. ( hill h Mimi. Im
wRY111!` 1'UtIM1>hl IY9MW 1_ro n, t .
iYY 1r•t MFnn mitt ltA YbYr, aHiM,..
5..au:. it a.ry µ,..,nXi� NSryX.iiN1 Put MM
� .,.1 r MgµbnWSii1 NA {1rm1-• ,. u. � _ ,
Kramer,Chin R Mayo,Inc.
Mr. Warren C. Gonnason. i>.F.
December 11, 1960
' Page two
Based upon our meeting of 28 November 1980. as outlined
herein, we have propceed a scope of w.rk which includes the
following five phases:
Phase 1 Sunset Blvd. Detention Basin Review
' Phase 11 Park Sunset Blvd. Basin Master Plan
Phase III Renton Village.So. 7th Street Master
Plan
Phase IV City-Wide Drainage Mmier Plan
Phase V UtilLy Developments
Brief descriptions of the various phases of the project are
included here to give an overview of how the work would be
organized and accomplished. This process is similar to that
used successfully in many of our post projects of this type.
Our approach to the City of Beljrvue's drainage planning is a
good recent example which utilized this type of approe ch.
Phase I - Sunset Blvr,. Detention Basin Review, hi this task
t e—operation detention basin at t upstream end of
the Parkr Sunset Blvd. Basin during the 21 November 1980
storm will be evaluated. A brief memorandum report v ill be
prepared summarizing the review including probarle outlet
settings and discharge estimates. Since the operation of the
pond during the November a storm is the subject of a lsw
' Ault all work will he clearly documented.
Phase 11 - Perk,Sunset Blvd. Basin Master Plan. Phase 11
' entails the ova opment o a rainage master plan for the
entire Psrk,Sunset Blvd. Basin eased on full development
conditions. Oil,water separation will be considered in the
vicinity of Lake Washington Beach Park. The recommended
master plan would be accompanied by a capital improvement
plan to show the various projects, their costs and timing.
' Phase Ili - Renton :illaga,.5o. 'th Street Master Pam. In
ose s master p en or t e Anton lag—e, t Street
Basin will oe developed based on full development from
current zoning. Alternative plans for eontrolli tg the
drainage will be developed and evaluated before seleetirl
the recommended master plan. As in Phase II, a 0spP .1
'mprovement plan will be prepared.
Phase IV - City-Wide Drama Master Plan. The drainage
-neater p anmrig or tha entire Kenion jurisdiction will oe
brought together in Phase N. The remaining basins within
in* City will b* analysed as in Phases :. and 11. Each basin
which was not analyzed hydrologically in previous phases
tKramer,Chin&Mayn.In(.
Mr. Warren C. 6onnason. P.E.
' December 11, 1980
Page three
t will be done at this time. A city-wide Capital improvement
plan will no developed which will outline the various
projects, their costs and priority of implementation.
Phata V Utllfty Develo ment. In this phase the work to
este s the i amage utility is accomplished. An attorney
' tsuch ea Mr. William N. Appel, attorney wtt9 the firm of
Roberti, Shefeirr.an, Lawrence, Gay and Mochl, would work
with KCM to assist the City in preparing the necessary
ordinances to authorize formation. An antial seoping of the
' utility services will be done here along with setting the rate
schedule, establishird interim budgets for services, and
generally doing all preparation necessary to Ming the utility
into existence.
Also developed in Phase V will be the rules and regulations
' for operating the utility and complying with the drainage
ordinances. Procedures would he established fo• permit
acquisition, operation and maintenance, and odling for
services.
We are looking forward to working with you on this
important project. Please give me a call once you have had
the chance to review our submittal. Our• workload is
currently such that we are able to proceed with the project
immediately.
' Thank you for considering KCVI.
Respectfully,
KRAMER,CHIN Jt MAYO, INC.
' Richard E. Warren. P.E.
Vice President
REWtpa
Enclosures
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iCMY OF RENTON
i 'STORM DRAINAGE PLANIRNG
iTABLE OF CONTENTS
i x r
kPPROACH TO THE PROJECT
iSCHEDULE AND FEES
RELATED EXPERIENCE
iKEY PROJFrr STAFF n
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Crrr OF RENTON
' ETORM DRAINAGE PLANNINU
APPROACH TO THE I•RWECT
tThe k:ity of Renton, like many others in the Pacific
Northwest, Is experiencing rapid growth and change in
' exletIng land un which real is in higher peak+ and
volume of stormwatee runoff. Growth and land
oevelopment also typloally degrade the water quality of
1 the runoff into receiving water. 4 existingt storm
drainage systeins are overtaxed and in need of vgnifleeint
expansion, upgrading, and maintenance, it is often
difficult to gimersle the amount of revenue needed for
the projects from general probe works tunes. Whim this
le the bne. etablhhment of a storm drainage utility can
be the means bt• which revenue through user charges .%
raised to accomplish projeeis, Using the drainage
utility's annual income from user c"as. the (%ty can
"it bonds to finance, the necessary capital Improvements
Is will Is adequately Operate end maintain their existing
+yatem.
Our approach to assisting the City of Renton establish
their drainage planning program has boat formulated and
tried over the years on similar projects for the ewes at
' tkllevue, Sietiacoom. Corvallis, and Albany, Organ, to
name a few.
hosed on discussions with the Public Works Department,
our suggested approach consist.% of the following phesest
Phase I -Sunset Boulevard Detentlon Basin Review
' Phase 11 - Parx'Sunset Boulevard eastn Mosier Plan
Phase Ill - Renton illoge"South ".Ih St;eet Neater
Plan
' Phase Iv -City-wl+fa Drainage Master Plow
Phase i' - utility Development
Asse ! t tl�t�Alf"
M I>• 'Jot n ion Review, In
' t u tr—t--tF�—opar—iElon a gentian niisin it lM
upstream and of the Park Sunset Boulevard Reain during
the 31 >lowmber 1990 storm will be evaluated. A brief
memorandum report will he ;xepared aummerialrig the
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review ;ne1Wlrgf probabi- outlet uttinp and dlaemtrg.
•timata. Since the �,+ration of the pond during the
November 21 storm is the •ub)ert of a lawsuit, all work
will be clearly documented. Phase i will speelttcally
include:
1. visit the site to take photon end 44orve the
condition, setting, and arrutgemcnt of the
detention facility.
J. Review the conditions at the detention facility
wi n any local observers and the Public Works
Department.
C,.sot and review as-buat .tawirw- and
operation manual lit any) for the pond.
J. Umrig November 21, 19410 Sea-Tao storm data and
pond outlet conditions. compute the outlet
disaherp and water surface elevation in the pond
for won tour of the atom.
5. Compare and rgnlaient on the computed storm
performance of November :lot to the deeign
condition.
4. Document the review and analysis in a
memorandum report to the t'ily.
,. Assist the City in the capacity at "expert witness"
should this no raanrad in the rase.
@hose Il - @ark-Sunset Bou ova d nn�� Pl .
r�a:,r antLi6—Yhe cement o a—TM1141ge Master
plan for the entire Park.Sunset Boulevard Basin based on
full development aondittorw. Oil.wator separation will
tie considered m the vicinity of Lake Washington Beach
Park. The recommended master plan would be
accompanied by a capital impmvement plan to show the
various protects, their costa and timnpt• Mesa It. ill. and
IV all involve basin master planning and the steps 10
accomplish each will `re very similar. Pose II will
molu let
1. An :nwntcry at the existnnit drainsge facilities
and capacities to itamise problem areal.
i
:. Review ytor planning end drainage Analysis done
in tM tMeln end work with the City staff to ordure
planning criteria meets City gate.
' J. From aerial . 18, field surveys, and City input
regarding basin land use Zoning, prepare A
hw ologle model of the basin using KCN's Penn
State Urban Runoff Program.. which we have
evWatble in our in•house computer storage fees.
4. Simulate A :S- And 100-vear event Atorm's effect
upon the basin coroidertng both existing and
future developed conditions and idontifv problem
Areas.
' S. develop alternatives to mitigate problems And
consider multiple-use improvements where
' feasible. Evaluate erosion, oil,water separation.
rind water quality improvement needs in the basin.
A, Prepare schematic plans and total project Met
estimates for "on alternative plan.
'. Evaluate aiternativee And select most o st-
' effective plan for implementatlon,
8. Prepare A cApltal improvement plan for the basin
' 11naetor plan outlining ttve varrous projects, timing.
And costs.
o. IkWument the pitotting effort ui a brief, but
' comPlete, hound report containing all drawings,
cost estimates, oompuler runs, and analwis
procedure.
' PhaA� III - Renton oil th 7th Street aster Plan.
n ass a master pan or t e antan i age ut
' ,th Street Basin will tM dewiuped Pissed on full develop-
ment from current Zoning, dltetmative plRtut for
controlling tM drainage will no dewlopW and evaluated
before ulect,ng the recommanded master plan. \. ,n
!t Phase il, a Capital improvement plan will W prepared.
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The Wotfid Ater a involved in the master plan develop,
Mott for the g'•ntplt Viilagoisouth 'ih street Sum are
aeseattally U" is + as Outlined in Phase 11. However,
this beach is a-,-*what larger so the inventory of
i faeUltiss, hy*4+ V c modelling and pro>Gebly the
development of -am improvement plan will be more
extensive. Oir "Pais will make Complete up of
previous plannls. !torts isueh as the longs Reporil for
the basin so led, .e%t work wilt to Wed to the fullest
extant poeeidte.
Phase iV - Wide Arali Vaster Irian. The
ainage ma p wrong .or N. entire Kenton
jurisdiction e e brought together in Phase IV. 11e
rematnuig Wisa i wtthtn the City wUl be analysed u in
Phases 11 and 111. Cach basin which was not Aillyted
hydrologically in previous phase► will to done here. A
i city-wide capital improvement plan will Utt developed
which will outline the various projects, their costs and
priority of implementation.
Phase iV would include the following subtaskst
1. Work with the city staff to compiete 11W
i MYOMOry of exnttng dratnage faoiUttea and
systems and to identify defieionelse and proolom
are" in a Basin-by-Basin approach.
iReview, in detail,prior planning and dt
1. As reHutrW, obtain additional information (Warded
for the detailed analysis of *son subdranktge
tiesin.
i 4, work with the city staff to astablish Wwwom
aasaeaMent and 0AUt4on oriterla to keeattig with
the clty's "Is.
.1. From existing maps, iurv*vs, and reoords.recheck
it* major drainages and stbbatins.
' A. Work with the city staff. Whig aarlal photos. field
surveys, end office take-oft, to tweak down all
rubbaslin into rxiating land use and hydrologic
a
elemants. Proleat future element% based on
' current city planning projections.
7, Prepare all data for Input to the hydroicgtc
t mathilmstieal model. A model will be prepared
for each basin.
A. Run the model for the basins to establish Mating _
and isilop flows and to Locate potential problems.
output from the models will provide Information
to be used in tha development of alternative
solutiar to correct drainage proolems.
9. Run tha drainage model to develop a conventional
' storm drainage design Olen which will become the
base for estimao',C coat and environmental
effeativanses.
' 10. Using the models' output, develop alternative
concepts for handling urben drainage from each
designated subbasin. Consider land we rutrio-
' tions, storage and control, off-stream pipelines,
and other techniques to provide for drainage while
maintaining the natural streams, wetlands, and
drainage elements. c oninderation will tx given to
it* quality of runoff throighout this planning
process.
11. Conaldsr multiple-iue posili tlitia during the
development of alternative plans. Investigate
wurces of matchlttS funds for land acquisitions
' related to park and reerestion uses.
I'.. Prepars drawings to illustrate and identify all
alternatives considered.
tl. Prepare cat estimates for all alternsttvea
' ronsidered including oesic conventional systems.
man-made facilities, livid requirements
(sassmenu, restrtottans.acquisitions)and others.
14, Recommend optimum plans for "on sub-beam
together with overall costa. The total planning
shall be in the form of a Drainage Master Plan for
' the city of Renton.
s
15, tPr a
heepare apical improvement protp�am outlining
tots!l protect Planned der the Staater Plan
estimates. ,
Projro)eet under
roars, Implementation schedule
16, Th'ouehout the effort KC51 well maintain ctae
with, aridt Wrhecie'ty Staff. Also, KC- shell assist
efforts es regoestWte tn, any Public mvolwment
by the City.
17' 111e resutta of Phase IV shell be
and daeaprt ,red containing all dt'awirt�paMrym to as
1 Plan for dra�ved to stub_"* the recnmmended
pha6e for alI suo-7+isub,
mtase 0' - C'blih' Devel ent. In this phase the work to
sh t dra n�geY is accomplished,
attorney Isueh as \tr, WIIUam .4 Appal. attorneys the firm of Roberts, SMleimon. Lawrence, Gay An
.11och1, would work ri with
' preperirig the with KC\t to i Aid
tormatiwt, ^OQQ�try ordinance@ at �° City in
tx done {n in scoplre of the uNiit to acthorise
eataoU@tithe rntenme Al pudith settl y servion will
' (So Cats for Seervice rat* schedule,
nt all Preparation no Bur y to brine -t vid he utility into
exlatenee,
' .ALvo developed in Phase 1" w111 be thnd
regulations for oPeratin e rules a g the
the dralnaga ordinancea,
adlitY and complying with
nd
1 established for Permit
Procedures would be
maintenance and b P pee °equces, n, oL»ration and
ng for services,
' ihts Phew apeciflaily includes,
A. Preliminary Prior to adoption
' 1. fNvei� an ,etderstanding of the existing drains,
menaitelnent function of' the Cit orie with' Oideets and present stafting, y a1
`• 311Pe and outlina the furictiona of the utiitty,
The
^ems easeasment will a converted to mango n
' and level of raPonsibility reyuiroments to
ktermine +offing Oeeeesery to Operate the
' utility. Equipment. space, and staffing Midgets
will be outlined and budgeted.
' 3. Through It review of City map$, site visits, and
discussions with City staff, define the uttllty
boundaries and further outline the subbasins or
districts of the utility jurisdiction. This effort
will be coordinated with the master plan.
4. An important task ,if Phase t' m w properly
inform the public and City ('ouneil to gain their
Understanding and support. Kc'%t has experience
in thisarea ttrough numerous Public involvement
t campaigns. tIe i'11v staff will be kept
thoroughly involved and briefed on all elements of
the work.
S. Taking the staffing and equipment requirements
(developed in v-7 in consideration with the muter
Planning expenses and other projected costs,
establish interim budget requirements.
d. Develop tha initial utility rate structure and
define the method of billing for all properties to
be Owled for drainage Wvteea. The attorney
will review this wbtaak effort to ensure its legal
strtus and trompatibility with future bonding
' requirements.
Assist the City in retaining an attorney to daft
arid;or advise in the preparation of ordlntneau and
roolutirxla to establish the utility.
I. Working with the City and legal censultmrit,
prepare the sat of rules and regulations for the
Operation of the tlrsinage utility,
' 9. Prepare masters and graphics for a public
information brochure suitable for distnoutton to
all prospective utility natomen explaining the
IatrPoses of the utility, the rate structure. appeal
procedures and operating rule and regulations.
t
' B. Implementation
I. working with the City staff an4 legal aOnsujtsnt.
prepare "nesters and gnptuae for a eat of rules
1 and regulations for the opentnon of tM drainage
utility, including procedures for:
ta Permit reguiremen, and acquisitions.
0 operation and maintenance of facilities.
' o Determining costs and tow to integrate cats
in the existing billing system. Assist City in
setting up budgets and accounting.
o Appeals for service and f-ocedure complaints.
2. finalise drannaga utility rules and regulation
program.
assist the City with public hearings and the
development of procedures to adopt the utility.
a. Assist the City in Preparing the btilirq format for
' all property claasifleations. lid in the
preparation of notices and the final
�mplementaton.
iLnvironmental im et Statements. The need for
anvironmen a Impact alatemenla or both the master
piwns and the utility formation should be more closely
asseaasd during the planning effort as input from the
Public is head, An EIS for the muter plan Olin be
delayed unto the ma)or projects in the plan are
' Programmed for design. NanV of the smaller projects
will not rOWWO an F.19 or A ctneckltst.
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tCITY OF RENTON
' STORM DRAINAGE PLANNING
PROPFMIONAL SERYICIM ESTIMATE
vo propose the work to be accomplished on a time and
naterials baste with a maximum limit not to be exceeded
,or each phase Of the project. The project could be
accomplished under five separate authorisations, One for
seen phase. Me lab.., coat to the City would be
computed on the basis of the diroct job wages of the
individuals actually working On the project times a
multiplier of 1.95 to cover company overhead, employs*
fringe benefits. and professional fee. Direct job costa.
such as printing, computer, etc., would be charged to the
City without overhead markup. Suboonsulting services
would be charged to the i tty with an audited overhead
' rate to cover the handling (1harges of the primv
consultant.
The estimate of manhours and costs for each phase of
the project are Outlined nelowt
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Total Total
Man Labor hired an
Phase Hour Cost n'.nt Coat
I. Sunset Dc- ISO S 11000 S Sao $ ?1300(1)
' iention Review
❑. Park sunset 350 14,000 41000 18.000
' Master Plat
111. Renton 4115 19.000 3,SRO :4.500
V illap i South
th Street
Master Plan
1% City-wide 1,5'S 83,000 1 ,000 15,000
Master Plan
t. Utility
Development
A. Prelim- 3?5 I4,500 9.500(2) N,000
' mary prior
to adoption
' R. Implemen- 7:5 28,000 2,000 30,000
tation
VI. Utility
' Dfls 200 9,000 1.000 10.000
Preparation
TOTALS 31350 it Si,500 $34,300 $199.000
1. Don not include preparation for and appearan^e as
*xpart witness. It retlllirsu. this will also be billed
buad on actual time spent
2, includes an allowance of $8,000 for attorney fees
whits would" arranged by City,
' 3. Total cost includes labor, overhead, professional fee,
and all direct casts.
J, TO be determined as part of preliminary work,
Includes some additional attornev toss,
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to
STORM DRAINAGE PA.ANNINI;
CITY OF RENTON
PROPOSED SCHEOUE E
Im TS/2
PHASE i., how JAPITM Auk SaP 00 Nw Ds Jw FabNo Apr MW1 Sun+el�fiHarlNr NMI
PmN ft"e Itl!
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IIL Raatar V*I w 1 mommommommos�
So ]tn Master Plan i
IV Car wale
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CITY OF RENTON
STORM DRAINAGE PLANNING
RELATED EXPERIENCE
KCVI has had an extensive involvement :n uroan drainage
' planning in the Seattle area for some years. Jur involve-
ment in storm sewer planning goes back JO :ears, but our
strong efforts at developing more environmentally sound
and financially feasible apW' aehes to drainage really date
from participation of our staff in the King county
Environmental Development Commission's Committee on
',Teams and Watercourses in 1968 through 1970. Since
that time we have directed detailed planning for R1BCO
Urban Runoff and Basin Drainage Study for the Seattle
District raps of Engineerst for Bellevue, Mercer Island,
r Angham, Olympia, Vancouver, Steilaeoom and others in
.,e state of Washington; .nd for Portland. Corvallis, and
alsany in Oregon.
We are experienced in working with varinus agencies and
the public in the planning, design and construction of
1 drainage Management systems empioying both structural
;conventional) and nonstructural solutions. .,tn important
part of our approach to drainage planning, in fact, is
' management and utility rate studies. All of these efforts
have involved program development and legaUfinancial
programs, including rates and ordinana:s, staff organiza-
tional studies, intergovernmental agreements, environ-
mental assessments and puolic information efforts. We
have often pioneered the advancement of new tachnoiogy
in these areas, including financing teehn,ques.
' KCM d doped the first drainage utilities n the Pacific
Northwest fcr the cities of Bellevue and Steilacoom,
Washington. 'he City of Bellevue's drainage utility has n
current annual ot.eration and maintenance budget o,
approximately $500,000 generated from drainage service
energes. KCN also assisted the City Of Corvallis, Oregon
' to enact a drainage service charge to support a manage-
ment system. Both municipalities were assisted by KG11.
Like the Green River Valley, these were rapidly develop-
ing areas which experienced localized flooding, channel
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erosion and property drmage m downstream areas due to
runoff. In those and
tl:e inability of nand drainageways to handle increased
-other projects. we drafted. in cvm t Junction with the local staffs and attorneys, ordinances
related to runoff control. cleaning and grading and water
quality, We helped develop rates and fees for drainage
t servitors that included monthly charges, development fees,
and charges ;n lieu of assessment as well as other
drainage-relnted financial considerations.
UrMn "reutuige Most, Plan for aw City of
Ilelle-vue, Wnct"WM
de"evue was trio first municipality in the Northwest to
adopt a full drainage utility and levy monthly service
' charges to fund the program, As a result, this project has receive nationwide attention for its approach to solving
both quantity and quality problems related to Urban
dranage. The primary purpose of the plan was to permit
1 the L(Intinued functioning of th- Citv's extensive stream
system. It called for wide use of detention storage and the retention of natural storage and recharge areas.
' Belvvue adopted a program of runoff control for all new
developments based on the allowable runoff rates desig-
nated for each sub-basin in the master pl. r. The total
Program cost of the Bellevue system was over $15 million,
Specific land parcels and storage areas were designated by
the study, and KOM assisted the City in negotiations for
land acquisltion by either purchase or land-use tradeoffs,
' KI:'d planners served an important role in this implemen-
tation process. Many projects in the Bellevue area have
now been constructed using the joint City'KCM
INn...� s. eexign
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' Drainage Master Plan for the Town of
Steilaciom. War"mgton
' Development of upland areas of Steilacoom and adjacent
Pierce County into residential tracts had increased the
severity and frequency of runoff flows that exceeded the
capacity of existing drainage facilities end resulted in
tflooding and erosion. In this multi-phased project, hC%I
examined past and present drainage pattrr o and their
' relationship to land development. the made recom-
mendations for drainage facilities and control procedures.
In 197, an inventory of the existing drainage system and a
' plan was prepared which recommended that Stei`seoom
establish a drainage utility, prepare a set of operating
ritles aiid regulations, and purchase property for runoff
control basins, including Farrell Marsh,
:n 1979 KCM began working on a master plan that was to
become Oe planning ducumant for the drainage utility and
' also supplement the drainage ordinanue. The basic goal
was to preserve toe natural stream system while providing
an effective drainage system amenable to the community.
' Due to budget limitntions we developed a prioritized
schedule to study the basins involved. We recorded known
problem areas and conducted a limited field investigation
to determine what type of facilities would be best suited
for the basin and what elements of the natural environ-
ment should be left undisturbed. We developed alterna-
tives for each basin, with various routes and techniques
for accommodating or controlling runoff, and recom-
mended the best plan in terms of practice, eeonomica and
' maintainance of the environment. Plans and profiles were
prepared in addition to the out estimate. The Steilacoom
drainage utility Is fully operational and the master plan is
' being Implemented.
Compreta•nsive Drauiagr Plan and Itevisioro,
' City of Mtvicer Island, Washington
in 1964 a romprehensive trunk >ewer plan had boon formu-
Iatod for Merear Island m the most efficient and
economic means for conducting stormweter runoff to
Lake Washington. This plan was never fully implemented,
' however, because of increased interest in preserving the
undeveloped areas of the island and the lack of available
furding, in 1972 KCM was requested to reconsider the
origiral plan and offer alternatives that would protect
tress, shrubs and natural water courses, as well as private
property, in in endeavor to :maintain the island's natural
environment.
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1 KC`i addressed the problems of erosion and saltation in
downstream areas caused by intensified development near
the creaks, stormwator collection in roadside ditches, and
culverts and storm sewers discin r'gtng into numerous
' natural ravines. Methods explored during the +rude
included onsite storage such as root-top or limited parking
lot ponding, underground storage, "blue-green" develop-
ment of the integration of permanent water areas with
open spaces to provide for flood storage, embankment
storage in roadside ditches, bypass piping to Lake Wash-
ington, and the construction of check dams in a few trial
areas. A priority schedule, alternatives and .Mecific
recommendations for each of the basins were presented.
t The City has established a drainage utility to implement
the KCM plan.
Careful analysis of plans for construction of Interstate 90
across the island was recommended to ensure that the
highway department's drainage plans were integrated
properly into the island's comprehensive plan. Also urged
' was strict enforcement of land clearing and grading
ordinances recently adopted by the City to prevent con-
struction that would result in erosion and earth slippage n
deep areas.
Urban Drainage Study and"70P Flood Control Plan,
' Bellingham. Wmvtungton
It was KC)1's "'Ignment to develop a plan of drainage
' controls and facilities that would permit the continued
growth of the Bellingham urban area and at the same time
preserve and enhance the natural beauty and recreational
potential of the natural streams that now through the city
to Puget Sound. The plan addressed the effects of
urbanization on the natural stream system as welt ab the
existing storm sewer system as it affects the streams. In
t addition the areas of Lake Whatcom, Whatcom Creek,
Smith Creek, Squallcum Lake and Squalleum Creek were
investigated to determine potential flooding and related
undesirable conditions as they relate to zoning and/or
intended land use. We also developed recommendation
for prevention of future problems. Detailed plans and
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and stream restoration for Whatoom Creek and Squalicum
Creek.
iDrainage Management Plan, Albeay,Oragm
i The city of Albany, Oregon authorized KC51 to study
existing drainage systems and drinage management poli-
cies, and to propose alternative ways of improving
i drainage ;n six areas: Oak Creek, Periwinkle Creek, South
Fork Oak Creak, Hutchinson Ditch, Cathy Ditch and
Thurston Ditch. .after the runoff for each tasin was
computed, the respective drainage systems were assessed
i for adequacy, rho KCM plan concluded that continuation
of traditional pipe drains would be the most appropriate
method of controlling runoff except in the Cathy Ditch
i Basin industrial area, what, detention is cost effective
and maintains water quality.
i Management defieiancies resulted in part from lack of
planning, with influence over the drainage system held
simollaneeusly by `our departments and no city aui.tority
to direct development. KCM recommended a centralize-
i tion alternative which places drainage systems in the
Engineering Department as a 51.11department. With the
addition of a full-time drs(nae, engineer, the drainage
subdepartment could function in design, development, and
policy capacities. Tie plan recommended this alternative
as the easiest to implement and as having aceeplable
i functional capacities. Overall the drainage management
plan included the following remmmendattonu 0.)develop
staff eapatultties and awareness; (^.) develop and adopt a
i master plan and related policies; and t31 develop long-
term funding. Because present funding is inadequate, the
drainage management plan recommended a drainage
service charge to finance current needs and future
iinvestment in capital facilities.
Drainage Utullty study tar the City of Carvisa*Oregea
The purpose of this study was to evaluate existing city
drainage problama bailed upon both physical and admims-
trative parameters. The study team made recommends-
is
' tions, including costs, and suggeated maintenance pro-
grams for improvements to the storm drainage program.
As a mew of offsetting costs, the study team recom-
mended establishing a service charge for users of the
storm drainage system. organiaational changes required
to implement the program and effect better (Mainage
management were also discussed. This program is now in
' the final stages of implementation.
RMCO Urban Runoff and Sadn Deainaga Stuitlb for ilia
Corp of Engineers,Seattle Dletriet
t K1731 prepared a regional planning study to analyze now
uroan drainage concepts related to water quality and
quantity in the Ceder River,-Lake Washington and Green
River Basins in King County, Washington. It addressed
' urban flood control and flood plain management and
investigated the effects of urbanization aid changes in
land as, on small streams, alternative concepts of
' collee toms, control of flooding and ponding, and
ground :r recharge. Extensive data gathering was
required, including analysis of local urban drainage
' systems and local water quality charaeterlstitsti Mather
matical models were used to assess the effect on quality
and quantity of urban runoff by types of land use and
males of conveyance systems. The models are used as
dynamic planning and analysis tools :o continually update
the plan.
' I)rmnage `danagenient study for the l'orUand-Vancouver
Neln,t.uitan Area, U.S. Army corps of Eis veers,
Portland district
Rapid growth of urban and +uourban areas of this five-
county region has resulted in the inability of natural and
man-made drainegaways to handle increased runoff,
resulting in localized flooding, ohannel erosion, to some
property damage in downstream area,, including siltation
of streams and rivers. It was the tnteld of the prolect to
studv the entire area, present elternattw drainage man-
agement plans for two pilot basins, and develop a drainage
management planning manual for tua by local joVertt-
ments so that drainage and flood eantroi can be conaid-
Olt
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ereJ in resour:e management decisions, In the ;,utlal
phase the KCM team reviewed recent studios of the area
and riterviiiwatl local government personnel and Inter-
ested Millions. Then alternative drainage management
plans. Structural and nonstructural designs, and costs were
devalopeC for two major Deatn.. These were presented to
land government and public grouq for discussion acid
comment before final recommendation we made. The
final phase waa the drainage management manual, whioh
' represents state-of-the-art developments in drainage
management.
' Lake iialltiyfrr Rehabilitation Pro" for this City of
Mountlake 1'rrrare, Washington
' Thies project was a total program to address the source if
Pollutants in the water shed of the deflhad area, ;n
addition to system controls for addesaing the pollutants
1 once they get into the service system. The KCM project
team developed an environmental 'mpact statement and
was involved in public heanngs throughout the duration of
the project. Alternatives for restoring the lake were
developed, and tine alternative was selss,ted for recom-
mendation to the client. KCM also provided design and
construction administration.
' Parties Creek Rahabalitation Plan,City of KW4lastd
' This project r"nred both drainage and tisheries expertise
to incorporate a drainage management plan with adopted
eommuntty gods and P01101es Specific to fisheries habitat
enhancement, hC)i evaluated existing vondiltons of the
2,750-&ore drainage basin and recommended both struc-
tural and nonstructural rehabilitative techniques that
included stream covering, weirs, mprap, drainage piping,
gravel cleaning, grade vegetation, streambahk vegetation,
velocity deflectors, S.lt removal, pooling, vegetation
' removal and blockage, KCM also provided topowup
monitoring of the effects of ki'M's rehabilitative tech.
niques.
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1 Urunag.r NaaiytemeKit Plan, City of Olympia
KC NI Joveioped a :,range management pion for the
Percival Creek drainage bssin. Under natural coiditiorM
1 this bosin, baeause of its underlying pervious materials,
had very little surface flow to Percival Creek, an impor-
lent salmon end 91"Umad stream in the area. Impending
development of large vhopptlg areas and service facilities
for Evergreen State college made planning for drainage in
this basin imperative. KCVI developed a drainage pan
1 utilizing runoff control to simulate natural flows in the
beauty and assisted the City In eoolytng the runoff control
procedure. to the first few tangs. development proposals.
The developers have complied with the City's require-
ments and as a result, will, in the aggregate, save n large
portion of the motioy that otherwise would hew been
needed to invest in major storm sewer trunk facilities if
' Percival Creek were to be prasorved as a viable fisher"
resource. Providing assistance to city staff Awing the
implementation of now drainage concepts was a major
1 concern to us.
1 Pacific Highway South Drainage Study
KUg County-Hydnaulles Department, Waolvington
This project mvcNved the preperstion of a drainage raster
1 plan for a rapidly dsvelopirg, two-square mile drainage
basin in Federal Way, Woshington. rho basin, which is
largely commercial and industrial dovolopments, is
experi-encing severe flooding problems due to an inadequate
existing draliesga system. The project moorporated
hydrologic modeling, water quality, environmental and
1 east analyses to reduce the flooding and water Quality
problems of the brain. Key elamsmu of the drainage
control alternatives for thir basin wore on-site runoff
controls and detention storage. A funding program based
1 on utility service charges was developed,
gaging iPHga Crozet Deairirgr Naiaga.m,.ni Pins fair
Clerk Coeisty and the City of Vancouver. Washington
1 Ttus project nvoiyW a .Nalnage ,nester Alan for a JB-
square mile area of 'lark i:ounty eneompasnng portions
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' of tiro City of "neou"r- Plain included both drainage
control and detention itorep. St.ecifle deveiopment
Proposata ware reviewed for eversl subdivisiom and
' oommeroial dsyslopments during the ooumv of the study.
The Pro)aot included hydrologic and water quality
anslysa, sociN, enviranmantal and cost attalyaea, and
1 plats to create a Public park, rWuea noat damage, and
auminate water quality Problems, rho City of vanoouver
and Ci..tk County are proceeding to estabuM drainage
utilitise to manage and fund the plan dayslopad by KC V
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KEY PROJECT STAFF
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CITY OF RENTON
' STORM DRAINAOR PLANNING
KEY PROJECT STAFF
' Kramer. Chin A Mayo. Inc. is recognized as a leader in the
Northwest in the field of drainage management. Our staff
' pioneered much of the work done in runoff vontrols and
utility service charge funding. KCM was t.ivolved in
water quality analysis for many projects throughout the
nation as part of aquaculturo activities, lung before the
requirements of current environmental legislation. We
have been extensively involved on a continuing basis with
studies of the effects of flooding, erosion and pollution on
' water quality, and solutions to these problems through
drainage management.
KCM has been integrating urban and resource planners
into our tertian facilltiee planning projects for many years.
This multidisciplinary approach to drainage management
planning has beers especially, successful. Exempt" of our
' planning efforts include involvement in the joint venture
of Metropolitan Engineers of Seattle from 1954 to the
present In order to serve the Municipality of Metropolitan
' Seattle in the renovation of their entire sewerage system.
This work provided our staff with considerable experience
in regional management am' planning. Preparation of the
RIBCO Urban Runoff and basin Drainage Study Report for
the Seattle District Corps of Engineers Rave us experience
with the River Bast% Coordinating Committee (RISCO), a
multi-ageney organisation which coordinated studies for
t management of water quality, water rommoes, solld
wastes and drainage for the 'Metropolitan Seattle area.
t Due to our extensive experience with drainage Manage-
ment projects, KCM staff members have oonsiderable
expertise to developing the types of plans, procedures and
' programs to satisfy the City of Renton's needs. When
involved in drainage planning, we give careful attention to
the utilitv's commitment to not only identify problems
associatad with storm runoff quantity and quality,but also
' to work toward solutions for those problems, and than
toward implementation of those solutions.
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The followlrq paragraphs descTaw the "key" individuals
that will be bommrlted to the development of your
project. Other disciplines, such a otologktts and
lsndscaps architects, may he needed at venous phase of
t the work. Individuals from these disciplines with
expertise in drainage plammrq will oe assigned to the
project as they are needed.
' SENIOR STAFF CONSULTANT AND MANAGRR
RICHARD E. WARREN, P.E.
' Mr. warren will assist the project team as a Savor Staff
Consultant in the meter planning and engineering phases
of the work. Mr, Warren will personally manage Phase V.
t Utility Development, of the project due to his extensive
background in that area. He has :S years experience in
municipal and conservation projects and it no barn
' through his efforts that the urban drainage utility concept
has found acceptance in several Oregon and Washington
communities. He is well known In the field of drainage
management and has beat responsible for the project
' management, including liaison, agenoy coordination,
public involvement and fireneid elements for the
following representative ""tat RIBCO Urban Drainage
Study for the Seattle District Corps of titglnsersi Burnt
Bridge Creek Drainage Management Study for Clark
(;ounty; and urban drainage studies for the cities of
Bellevue, Enumclaw, Bellingham, 'fiercer Island, Olympia
and Thurston County. Washington. most recently he has
neon in charge of the drainage management project for
the Portland-Vancouver Metropolitan area for the
Portland Corps of Engineers, as well as the Seattle
Metropolitan Water System Study for the Seattle water
Department.
PROJECT MANAGER -THOMAS M. kFARMS, P.R.
' As project manager Mr. Kearns will ensure the timeliness,
cost effectiveness and overall progress of Your project.
He served as project leader for the Rellevue Drainage
Master Plan which is similar to the Renton project. Mr.
Kearris was personally involved in all aspects of the work
performed for the Master Plan. He participated in all the
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'walk-ttroughs- of stream habitat% and drainage basins
1 and determined siting of NU the detention ponds. He was
aware of the sensitive environmental Aspects of spectfie
stream channelization protects As proposed in the Bellevue
1 muter plan and developed cost estimates for the
measures proposed.
Mr. Kearns is group manager for the civil municipal
1 %action of KCM and has beat project engineer or manager
for a variety of civil works. He has hands-on expenenes
,n all "laments of projects from feeaibility anslysts
1 through planning, design end construction inspection and
administration, molaft evaluating financial
opportunities and obtaining grant monies. Much of has
1 work has involved aassesing, planning and damping of
utility systems rerweation and upgrading to meet hew or
^)acted roquiremNtts. Prior to loaning KOM Mr. Kearns
participated es a client consultant coordinator for the
1 storm drainage portion of the Snohomish County Urban
Svstem Engineering Demonstration Pro)ae4 WASH-118E-1.
1 other representative drainage-related projects in which
no has been involved include 0omprehenaive Water and
Drainage Plan for Solaville. Oregon) the Drainage
1 Management Plan for Albany, Orsgont and the i'Apitol
Facilities Plan for Hogiiam. Washington.
PROJECT LEADER-STEPHEN C. WAONER, P.E.
1 Mr. Wagner will TA responsible for the day-to-day
operation of all phases of your project, ka .,r proposed
1 project leader, he will supervise staffing and work
scheduling he wiU be the main ocntaot between the City
of Renton and our pro)eet team.
1 Mr. Wagner'% diversified engineering esperienee well
qualifies him for this role as project leader for your
1 project. He is a specialist In all type of hydrologic and
hydraulio planning and design. Hla association with
projects includes eknamieal and water distribution siatsma.
pipelines, refinories, nuclear and fossil fuel power plants.
1 Prior to jotmng KCM, Mr, Wagner4 expertise focused on
hydraulic deatem and transient investigation of otoelines
and associated .ontrol %v%tams, dams, spillways, .mnatt
1 and other "suite struetura. His work also involved
hydraulic network design one computer incysts, flood
vtudles, sedimentation and scour studies, flood routing and
reservoir operation studtea. Kr. Wegner has stpery sed
hydraulic transient field tests and discharge
measurements related to circulating water systsma. He
has also developed mathematical and physical models of
hydraulic sys,ems and prepared formal reports. in tine
am of piprunes and pump statione. Mr. Wagner has
' worked on projects fir water supply. ^treulatinq water and
petatodt design and analysts. The pipelines involved
ranged in size `rom small domettie water distribution
piping to 144-inch transmission pipeline&. He has been
responsible for ilia layout, vlting and pressure
ciassjfitxstion of a 90-mile pipeline to supply makeup
water to a nuclear power ;cant. hiss project included
design of the collection manifolds, pump station siamil and
layout, gate and valve stations, river crossings and a
system operation program. Other considerations ware
' teohnreal and economic analysis of various pipeline
materials including fiberglass, Corrugated metal, areal,
reinforced conerete and eonerete cyUnder.
' Mr. Wagner rag managed or led the following drsinage-
related projsou over the plat five years; Lake Ballinger
Rehabilitation Project, City of Mountlake Terrstvt
Neydortwuse Drainage Study, City of Rellevuet Surfs"
Water Management Study, Ciq of Kentt Portland
Drainage Mahagement Study. PdrttandCorpx of Engtnren;
CUllty Comprenawive Plan. Town of Sultant Saanich
Drainage Study, Vaneouver, &C.. Canada,
' HYDROLtkIIC RNd1NRRR -JOHN P,CUUIOH,P.R.
Fir your project Mr. ,'assign will provide the hydrologic
computrtiomt analvsae to predict runoff hydrolfraph
charaeteriaties under existing and future land use
,onditions. These analyses will be Performed via KrM in-
house computer models lewloped hat !loco and reservoir
trouting.
Mr. Cussigh's haekgrond metudes hydrologic wars,
hydraulic enalyus aid design experience whioh he no
applied to projects oonoerning drainage management,
water supply and kgUeulture Wilittes. He has had
' responsibility for comfuoting these projects from the
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conceptual stage to final design. He reviews hNdraloglc
data and assists in site analysis and layout for many KCM
projects. His project experience relating to Re nton's
needs and goals includes The Portland-Vancouver
Metropolitan Area Urban Drainage Study for the U.S.
Army ( or" of Engineers in Portland-, and the Pacific
Highway South Drainage Study in Federal Way.
' CiVIL INOI IKIM-JOAN iN.CAR.',ON
Hs, Carlson will aces$% in the engineering aspects of the
master plan for your project. She is a civil engineer with
broad experience In studio and design for muniolpal
drainage projects. She performs hydrologic and hydraulic
' analyses, writes reports and specifications and prepares
cost estimates. project budgeting, runoff determinations
and computer analysts of pipeline networks for small
water systems. She was involved with the Ctty of Kent
' Drainage Management Study and therefore has knowledge
of your area and citizen needs. Other wear-related
projects In which Ms. Carlson has participated includet
' the Lake Ballinger Rehabilitation project where she was
Projeet leader and designed wain, sedimentation ponds,
and determined streambed rehabilitation, maasurol the
Seattle Comprehensive Regional Water Plan (t`O►iPI,AN)
and Draft Environmental Impact Statement, where she
Assisted In the writing and compiling of ressarehi the
Doeing Detention Pond Study, for which she performed
' computer analvns. the Somas Water Swtem Improvements
kirant Applicationt and the knatal Interceptor study and
engineering evaluation biietsr.
' CIM ING04UR -PHp,IP (l. Rom). P.E.
Mr. Roppo will have wtglneering input into the master
tplan segment of your project. He has been involved in a
variety of drainage planning, management study and
design projects. in many of which he gathered and
prepared dsta for computer programming and utllltiaed
this informatton (Of 040itering decision-making rheais
prajeets include the Bellevue Drainage Muter Plan, in
which he prepared structural alternatives and cat
estimates using computer deist the Steilacoom DrainsKe
Master Plan, in which he served es project engineert the
Portland-V�'ncouver Metropolitan Arc Drainage
Management Study; and the Ft. Lewis Master Plan, for
which he designed a storm drainage system to
accommodate future development. Mr. Roppo loss also
designed a storm water retention system for the Woo and
Park Day Care('enter In Seattle.
URBAN PLANNER - BRTCE A. ECKLEIN, A.I.P.
' Nt. Eckletn will have responsibility for ins mHtar plan
segment of your project. He has contributed urban
analysis, planning and dwiitti to many KCM projects,
Including the preparation of environmental asswments.
Mr. Bekiein led the development of the Ft. Lewis Motor
Plan update ono is currently the project leader for the Ft.
LFWia Installation Expansion Capability Plan. in addition,
he is currently reap.+nstble for development or the Nester
Plan for the U.S. Coast duard Station at Kadtak, Alaska.
' Alae specifically related to your project, he eondueted on
environmental analysis for the RIB( 0 Crhan Runoff and
Basin Drainage alternative systems and environment+d
assessments of drainage utility proposals for Ikilavue and
' Norcer Island. Washington,
Prior to joining KCN in 1973, he was a senior planner for
1 the City of Seattle. He had charge of the Ovance
planning "(icon of the department of Parks and
Recreation, with responsitiity for an 40 million
' expansion and development of the city park system under
the Forward Thrust Program, tie was extensively involved
in coordination with community organizations, city task
forces and the City Council. Previous planning saparienoe
' involved analysis and preparation of comprehensive land
use plans for a number of (Sties and counties in the
Northwest, Including Paeifie and Kitsap t',ountles. Mercer
I31anA xnd Pot, Townsend.
i
' H A R T . S I S I. 6 R , W ILLIAMS & ROTH , INC .
•uwe A �91NNtOM
' ,tee, u• • n
f HN1U14Nh INp,N11�t • 'AND $U*v Ypy • IIANNIM
1
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LANO llklN
tl{NNIRS
it A R 'i l l R , W I 1 1, 1 V 11 R tl
p,.l ..0},(.M YN�,, W{♦ Ki11 K'. \Nq WA.w,NgY9M
1 .;,>,
I City of Renton
tiuni:cpal Building
'100 :till Ave,.uc South
Benton, Weahingtnn 95055
Gentlemen:
In accordance %Lth yoar aithori_ation of octoher ?, 19"2
we hnlc made eng iueer u1g ;,iudio, the rz!J.•tl,;;v
and ?,arch 197' drai.ntgc problraus at Sprin&tlrclolk grater>hzd.
' rhu lullol.ing rvport suruxa:iec:. our fimli"N' and couclu
>1 Uf15.
Very truly %our>,
1,.01 , SINICR, F.;LLI(4'NS !i ROM, 1'a:.
1. /t•.� 3
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Ytis pxoxl.r�l
i`uring and After hcota• raia,torm ou febx%wry ." and 28,
I:% tonsidetahle hood la^kape occurred at the Springbreak
h'atershed. the actual damage has been carefully documented
by the Citv of Renton by reparts and photographs. Classif-
ication and extent of damage i• not included in this Report,
Me references made in this Report to photograph numbers
refer to the City of Renton': file of numbered damage photo-
rtaphs.
l iXll l"1Cti`+
t.crtnln flog: dam,iHc acatrrod at' alit �prirgbro.�k hntcr,had
d',, ing the raiiistnr' ,, or 'rvhrvary 2-t h and 28t11 :4'P_'. The
ha,,ic problem involved hc;ty% raivinll dulring a storm that
later was classed as a "25 ye,at trv4uoncc" stnrn. 'the ra-
,�miting runorr sub,tantiall> saturated all available ground
III the vicinity of S. P.. "oath Street and 102nd •\venue S. 1..
ine extreme,, heavy runoff rr:is ratted hN the heavy rainfall.
,ied was co.;t.nu, led by two W,tr factors. land development
in the area ha, reduced the ability of the gr,tund to absorh
Irater by coierit .. large areas with paving and structures.
+ !his :.#used tunoi to be more rapid mud coi%gL:(ucntly larger.
1 5acondly in two .:acres scorn i:atei %,as partiillc .iucr'ed
from natural water courses. Our investigation consisted of
field work, conversation. with adjacent ,iroperty uwners, and
I office computations. She investigation utilized field survey
work as aoll a< detailed rainfall intensity data secured iron
the National. Climatic Center at Ashecillc, ,North Carolina .
Sec 1ppendix 1
The investigation is decided into four units:
1. Natural Causes
Z. tliivrsions from Natural Ptain;igc
4. Runuli prnl,lvo withi❑ the �'•atru.; :,t
t, fiydrnxl it COIAI)Iltal ions
L Natural faues
1'he surface soil in the upland drainage area 1, vla,< ifted
(11
under the Alderwood series, in the U31,1 ,oil survey the
drainage chp racterisr icy were noted as follows: "6urfacc
drainage is sufficient, however, internal movement is great-
ly ret�-,tod b, the remeutad substratum. Waterlogging fre-
t.
q,rently occur, at th, suriacv of the indurated material
t:intcr and early spring,." Tree roots Rrnthorizontally
sae to the barine,.s „l the substratum and generally pena-
trntien is rr;a ri0ctl to S feet . the permeShility of the
soil ranges from 0.0 to 2.0 inches of rater per hour as
im ed in a recant USDA study. The foregoing items coupled
with the heavy rainfall involve provided a saturated cor^
dition throuShout the drainage area. When a high intensity*
raiaitall occioved on 1,vbruary 28 tho resulting v%trenel,v
hir,h rouoff caused conitderahle dariage in the watershed.
2. Diversions from Natural Drainxo,
,the basic problem area tnvulved was tit point 1 shone ou
?lap P. N�avr of ;.roam avatar from the residertial
1. 111A tiouthenvrerl. resulted in water by},assinr rho
intended drain po,nt � the storm manhole at Point 1. '111,
oxisting roadway cross o"tlons showed that store flows by
passed the manhole and proczvded I A across S. li, 200th
Street and Westerly on thru the graAQ break. Pbotos 15 $
it, showed that a substantial flow hypessid the %l ind flow-
ed Westerl.t• on the South :;ide of S. h, MPO Strrct. .
lrhot,z,w and survey data also votrfied that thi> flow was dl
verteJ ' o the \orti. side of S. 1, Zooth <trtt at ipprok-
�a Z.ely ` ar. eV Station. i . 10. £htc flow ulti-:itr:, arrival
at Pt. 2 removing considerable gravel trom 111.e North shoulder
,i Y. i. 'nttth Street and leaving it spread .,n tho adjacent
ifield, The water then flouad Northern overland into the
tiatershei causing severe damage. When the Springbrook school
was opened, 100th Avenue S. E. was protected by placing ditch-
ing and culvertia, on the hest side of the than e�i,ting gravel
road Between S. i . 20,1th Street and the :tout`, ptoptrty line,
\t same p`iat vt title storm water flow was ditnrtr3 4oithvrh
from areas t:nrmtlly draining he torl�- at S. I . :111th Street
and liloth .Avenue s. 1, A portion al ti,i+ dircrtv,t floe from
the residential area lying S, t'. of tho inter+cet i also
feUnd its thav to Point : b} the new ditch and culcrrting 1a
the hest side of looth Vrenua S. G. The ,torn hat" ,ancadini;
hesterly John the hill along S. F. ;troth Street aa<t all the
water from the South concentrated at Point 1. The flow con-
centration was so great that it phy -ically romave,l t4c surface
roil causing large and small trees to topple in the forested
area lying above the Jan on the Watershed propertt . See Photos
and M The s;'ii removed was wash®J down the creak and
S.
'aOnpletely 1" lled the tir;ct catclulont dam. See photo%
hetore ank after, !« ano dug once the vatcbrcn.t dam was
tull all further d.Srin %,ta tr:llpod by the main dam.
Sae Appendix 3 fay -httmolo4y of event.,.
3. Runoff within the Watershed
The Springhrook haterstcd is a S3 mere tract used by the
Renton liat.er Department as a water supply collection area.
The water %yaten improvements oxtating prior to lobruarl
I,t-. includaa; the upper calircter Jams, comiectinr culverts,
1-flier dart, vrtpp'ly pipolines and chlorinator station.
The upper colle�tot clan% ,ire rancrote r.it oft walls which
' ""One ,n=t ,nllvtt both surface im! un,lerKraund 'eater.
P,n lowrr Jam t, eyrthfill lai;l' it teintor:ed c, nt.r-,te fa;.e,
inr dart II a Iitry I "1,tc .yt}J . . I1:, t; hull tinrt',i,'e .u,d under
an„ „_) 1 an.! I❑ ad,i, t ,oil :'ria>. a;i c ,t r11."! LIIt
in Minn gallons i'', water 5to' . .
the dam has All oeerflcv,° which pt, tocts the• dam troin being
v%ortoppod, I;hen w,.ter rive, above tho luvei of tl,,, ucrr
I ai, weir it wi 11 i>o ,IiV-'- to,l t tr„u�h t,,0 12" pipe 1, hart t
the downstream tream beci. Ile t,eir '. :.. to olerfio, :.1.
of approximatol.y 17 cfv. 'I he ton of tiio dnri i. appt,;ximvt, _.
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I. 1h: estremely high runoff in the area wa, cau%ed by;
a) I.rtr.nely high precipitation as xhnun in 1ppendix 2
h•; Perne+thiltty and retentive capacity of the soil
has been r»du.a d by land dacelupnant causing a more
rapt.. runoff.
.lt. the time of paah ratofall the permeahiitty and
rrtcntiva capacity of t`,te soil had been rydu;ed by
';mratuo2 of the Atilt by prior rainfall.
J' llrainagv stru,:t-..r^ have diverrvJ Clow frtim natural
drainage to Pe uit . where it then entered t!w Watet-
sheJ by overland ( in;,.
At the time of Pea# ranntI an undete till ine,1 tlo.; traveled
from Point 1 to Point. t\e9t U:'t Y' diti;lp 'Ind ".11'dllPi to
S. V, 200th Streat. i!.:.. fior, 1 , c'ontrur to
natural draiaade oc:ttrrvd hti,auar 1 ;w v\troncl. high tun
oft concen. tcd at Point 111as t hle to Clot% NorOcrly
into natural drainage dne to the re,trietion of a rulvcrt
inlet structure.
S. llamage in the Watershed uns cauaeo by the flow from
Point 2 which entered tho hatersheJ by overland traiol.
d. Damage to the Waterxhod wosrld have b, , ., far lMss exten-
sive if flow had not entered at Point : but initead had
entered natural drainage at Point 1,
S. The zombined effect of the collector Jams and the low.-r
Jam was to reduce the runoff in the i ; tura. atream below
the hatershad. The lower dam was not overtopped, The
lower Jam acted as a containment strurturc and prevented
debris from onterin,,, the natural strcim.
6. During the period of high runo!( file sn.pcnd -d silt
and debris was probably carried through thy, dart and out
the overflou to the natural stream, lhis would have
ercuted a milky app�aranev in the stream.
Hater which is nor-illy withdrawn into the City systen,
iva)i diverted into the stream duo to the* appearance of
silt in the water. rhts diver-ii.r, did not significantly
contribute to thi problem due to the rclatively small
volume in comparison to total runoff and also clue to the
fact that the diversion did nit occur unt , l to 5 hours
at'ter time of peak flow.
N. With continuing dex'elopment of land, rapid storm water
runoff will continue to cau .o sinilar problems when
heavy rainfall occurs, rho mn.t prn.tical solution
will be:
C Careful design of storm facilities upstream of Cite
watershed, coordinated with the City, so that run-
off will remain in its natural drainage, or total
diversion of drainahc to protect the watershed
from storm damage and polluted water%.
2) The design of natural or artificial f, ilities
nicb restore the water reteutive qualities of the
land. This will require the cooperation of prop-
erty ottners and the governnental agencies re.pon,,-
ihle for storm .lraio.v.v p',mninh,
IU.
S.E. I92 NO ST.
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WATERSHEo ` )
JI_. S. E. 200 THi�T'..____�J`
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SPRINGBROOK WATERSHED
VICINITY MAP
CITY OF RENTON
MAP I
5 E.\` 200 TH ST.
,S
t 4 S E 204T l
112
n .
LEGEND: SPRINGBROOK WATERSHEO
IQ IDENTIFICATION POINT TOPO3RAPHY
--DRAINAGE PATTERN Ci TY OF RENTON
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FEB. 28 SEA •TAC AIRPORT W.B.O.
W8 FORM 1028C
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18 MIN.T I .201NCHES WATER
ww 18 MIN.
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flew into .9R
' Eiow diverted downhill ".00 cfn
flow tributar� to
Point 2 4 t:5 A,M. :.27
Total Flow '.t.d^ cfa
1
a, P Point 2
' Ssme intensity 'torm without d+vorvion
and improvement
24.a i . i.Yl
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CM.anoloyv of Evora;.
1PNu C:ulvorts
Pt 1 2 12" 1'it Clay CUIV.
Pt 2 1 9" CY1V.
1,101 Movvilla \pprntrd by King Count) Mar 19
I,1(,7 .Ian 1q 25 year storm.
Cul\orts '
Pt 1 1 181,
Pt 2 1 19"
1909 10+th Ave, 5,1 . Unimproved no culvrrting
19'0 100th ivc. , 5.1, Psvo, Urainago Piping to talled
10'_ lots " 25 Boar storm
Feh 29 High Intensity Iluinstorm
ski Ili A111 A
i. U. S. Uept. ok Agriculture, Soil sur%oy, kina
County Series 1434, No. 31. Septem mr 195Z
.. U. S. Dept. of Commatre, National Oceanic and
Atmospheric Adminkatrat'on, Surface Weather
ohl;*r%atkona, Record of precipitation at
Seattic•7acona, Washington, Pahruary 21 and
2a, 1972.
S. Tupographyt kori,+l topography method, ftotm
lugust 1970. ccnplleJ by halker and Associates,
Seattle, ha�hingtun
t
MATRIX PRINCIPALS
MANAGEMENT D&4m L,Jones,P a
GROUP �i«"°i: PA.
.e.
consultants in management and civil engineering
August l', 1941
Mr. Nn Monalthat\
offive Engineer
Ftubhc larks Department
Municipal Building
200 Mill Avenue South
Renton, *A, 90011
font
Thank you very much for the water and uwtw Capital Improvement ProP,ram
for the City of Renton, Th,. Information was useful in our study of the overall
consultant market need% a%se%srnent of the Puget Sound area.
Our t%atrix Mana;meni Group is very interested in the storm drainage i .;,ty
area One we would certainly be available to assist the City o! Renton in creating
and implementing s management and operal,ons proltram to meet the Increasing
storm drainage reads. I have enclosed a cop,, of the strpe of servers section
from the City of Kent proiert that you nl,,ht find of Interest in planning far a
similar prolet't in Renton.
I would welropte the opportunity to meet with you lend other appropriate start
to discuss the storm drainage utility tublect and how the Matrix Manallemtnt 6ro11'
might be of assistance. Please advise when you feel that such a meettno, wnutd be
appropriate and !enefli-Ld.
Good lurk in tlw Director's %eletakxt nrotess and keep us in mind 0 the
department has needs that the can fulfill.
Sinrs,rely,
I,in E. dslwit, P.E.
Vice President
JER time
EncImure
a.„t.osk. even a. m dert. eow west sysMs.an^ee..
Nlean.n asp al, 1.,a,. e Q air.taus Otte -
Intl ,W,*,,I saw, ➢ea itwxt4160 ww..y,�Nlla tea low
EXHIBIT P - SCOPE OF 5EHVICEe
The Engineering services to be performed by the Engineer
and the Consultant in the development of the First Phase of the
Drainage utility consist of tour tasks a* listed hereunder.
Throughout the development of the work for this phase which is
expected to and by July 31st 19al coordination with the Director
of Public work■ by the Engine*r and consultant shall take place
in the form of meetings at a frequency of ono every two weeks.
This will result in nine meetings and a final meeting to take
place at the and of this phase for a total of ten meetings.
Should f. rther meetings be necessary t,. . hudget for this phase
shall be revised aceordiagly. Othe: neetinq,• will also be conducted
as specitied hereunder. The following is a listing of the tasks
to be performed in phase I and the apecifia activities to be
conducted by the Consultant and Engineer under eachs
Task I - 'rho development of a scope of w)rk, a schedule,
approximate engineering fees, the execution of agreements and
the issuance by the City of notice to proceed. The primary
responsibility for this task rest* with the Engineer with the
consultant assuming the role of reviewing the scope of work and
the agreement between the Engineer and the city of Kent and
providinu input as necessary. The specific work elements to be
undsrtaken by the Engineer and reviewed by the Consultant are the
t=,llowinq:
A. Develop a scope of work for each of the three phases of
the project, review with City staff and finalise based on
input received.
S. Develop an estimate of the total budget, i.e. , fee for
engineering services, for the project showing the estimated
cost for each of the three phases constituting the project.
This contract is concerned only with phase I of the project.
C. Develop an overall project schedule for completing phase I,
II and III. Said schedule shall be revised based on revisions
to ,he scope of work for phases It and III should such
revisions be made.
D. Upon completion at scope of wt)rk, budgets and schedules
contract documents shall be prepared and a contract between
City and Engineer for work to be completed in phase Y
ishall be executed.
�t
{ Task it - Conduct a prvgtam plannenq workihop for the City
Council and Key City administrative staff.
The primary responsibility ter this task rests with the
Consultant with the 6nttineer assuming the role of reviewing
i the material as necessary and attendinq meetings towards the
f development. of this task. The specific work elements to be
undertaken by the Consultant and reviewed by the "O ne'r are
' :he following:
A. Review current plans and policies of the City as they ma•e
relate to and affect surface drainage.
B. Prepare for a workshop to explain to Council scope and
purpose of project as outlined in scope of work for phases I,
II and III. Conduct one meeting with staff to review workshop
material and contents. Revise same in accordance with staff
review and comment.
C. Conduct Council workshop which is assumed to take place
within a period of four hour duration. Should it be necessary
to extend the workshop into one or more session$, together with
the necessary preparation for such sessions, the budget for
this phase will be revised in accordance with Section II.
D. Summariac results of workshop(%) and present conclusions
to City staff for review. One meeting in budgeted for the
purpose of reviewing said conclusions. Present revised
con.tam u,ns tO -'tty i]wncil.
E. Revise scope of work for each and any of the three phase$,
associated schedules, budgets, as necessary based on Council'*
input. Should the scope of work for phase I be revised
pursuant to the Council's input, the other provision% Of this
agreement may be revised accordingly.
Task Ill - Prepare for adoption by City Council an ordinance
creating a Drainage utlity for the City of Kent. The primary
responsibility for this task rests with the Consultant with the
Engineer assuming the role of reviewing the necessary documents
prepared pursuant to this task and providing input to the Consultant
as necessary. Attendance by Engineer of meetings scheduled
and attended by Consultant with govPrnmental agencies and other
financial and legal consultants as may be necessary shall be nn
the average of one meeting per entity purusant to this tank. The
specific work elements to be undertaken by the Consultant and
reviewed by the Engineer are the following:
A. Coordinate with King County for possible participation
of King County in the Urainaqe Utility. Coordinate with
adjacent cities and interested agencies for the purpose of
informing said cities and agencies of the project and possible
input into project scope. Should such input from any cities
or agencies result in changes to the scope of work, the
project schedule and budget may be accordingly revised.
B. Advise the City on the status and content of an agreement
between City and King County which nets forth the conditions
and provisions for the County-5 participation in the Drainage
Utility: The role ot. the Engineer shall be an advisory
role primarily related to engirecring matters and their
associated costs.
FC, Assist the legal Council retained by the City in prepara-
tion of an ordinance creating the utility. Review said
ordinance with staff, revise as necessary and finalize.
b, Present ordinance establishing Drainage Utility t., Council
for the Council's review and adoption.
E. Develop, evaluate and establish with staff participation
interim financial arrangempnts for phases I1 and III.
F. Investigate with City staff and Council, adjacent cities and
appropriate agencies regarding the followinq issues which
may affect the formation of the utility and the development
of the Drainage Master Plan:
1 - System's policies and procedures
2 - Rates and the basis for establishing them
1 - water quality issues
4 - Status of agricultural lands
5. Exemptions, if any, and basin for them
6. Use of puhlic lands for retention basins
7. Status of state and federal lands
The issues listed here abcve will be the subject of discussion
during the workshop conducted with the City Council in order to
establish City's position, an well as can he determined regarding
each of the issues. Meetings with other cities and agencies will.
h. conducted. In order to make information generated pursuant to
this task available for use in phases II and III the Consultant
will prepare a summary in the form of a memo-to-files will be
prepared regarding the issues listed above.
Task IV - Prepare the initial phase of the Drainage Master
Plan consisting generally of an inventory and d±scription of
existing drainage facilities,
The responsibility for this task rests primarily with
the Engineer with the Consultant assuming the role of reviewing
material prepared pursuant to this task and providing comments
as necessary. The specific work elements to be undertaken
by the Engineer and reviewed by the Consultant are the following:
A. Collect existing s}stem data regarding the physical features
of major drainageways consisting of drainage area, slope,
elevation and capacity using existing records from the
following sources of information:
1 - City of Kent
2 - King County
1 - Soil Conservation Service
4 - Cities and Districts bordering the City of Kent
5 - Metro
6 - Department of Ecology
7 - King County Drainage Dist. Al
8 - U.S. Army Corps of Engineers
R. Supplement the above sources with a field reconnaissance
survey to complete the basic information on the major drainage
ways. For the purposes of this contract a drainageway is
defined as any surface drainage pipe 240 or more in diameter
or any open channel which serves as a primary tributary +o
the major creeks in the City of Kent, falling in the same
else* as Mill Creek and Garrison Creek.
C. Delineate basin boundaries for each of the major creeks
D. Develop a concine handbook summarising the physical features
of each of the major croek basins.
E. Prepare a map showinq the basic physical features of the
erainage ha:+ins contained within the boundaries of the
Drainage utility.
ENDING
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