HomeMy WebLinkAboutSWP273307 _5W? 7--1 - '330-7
ti`�Y o CITY OF RENTON
PlanningBuildin&ublicWorks Department
"" `O� Kathy Keolker,Mayor Gregg Zimmerman P.E.,Administrator
ANT
September 29, 2006
Robert West
Victoria Pointe, L.L.C.
3904 Park Avenue N
Renton, WA 98056
SUBJECT: VICTORIA POINTE PLAT-REQUEST FOR REIMBURSEMENT
OF OFFSITE STORM LINE IMPROVEMENT
Dear Mr. West:
I have carefully reviewed your letter dated June 20, 2006, requesting reimbursement for
improvements you are constructing to the offsite storm line on Lake Washington Blvd.
You state in your letter that since this improvement will result in some reduction in
flooding to the existing outfall to the west,you request that the City share in the cost of
improving the offsite storm system.
The Victoria Pointe Plat proposed to direct discharge to Lake Washington in lieu of
providing onsite flow control(detention)as part of the project drainage report. The City
can only allow direct discharge to an approved major receiving water body if the
downstream storm system has adequate capacity for the total tributary upstream area for
full build out conditions and there are no existing downstream drainage or flooding
problems. A single functioning outlet to the west served the site,but there is an existing
documented flooding problem downstream of your project on this storm system. Since
this outlet had an existing flooding problem due to insufficient capacity, the City would
not have been able to allow the project to use direct discharge in lieu of onsite flow
control. In order for your project to utilize the direct discharge option in lieu of onsite
flow control, you proposed to replace a non-functioning storm system to City standards
that flowed to the north from your project site and then to the west into Lake Washington.
This offsite improvement was necessary in order for the City to allow you to use direct
discharge in lieu of onsite flow control.
We agree that your offsite storm system improvement will result in a reduction in the
amount of flow to the existing outfall that drains directly to the west from your project.
However, this is an incidental benefit associated with the required storm system
improvements necessary for approval of direct discharge in lieu of onsite flow control.
The City did not direct you to make the offsite improvements to reduce the existing
flooding problem on the existing functioning outfall that discharges to the west from the
project. The offsite improvement was made by you so that the Victoria Pointe Plat could
use direct discharge in lieu of onsite flow control.
Therefore, we have determined that the offsite storm system improvements required in
order for the Victoria Pointe Plat to be allowed to use direct discharge in lieu of onsite
flow control are not eligible for cost sharing by the City's Surface Water Utility.
1055 South Grady Way-Renton,Washington 98055 RE N T O N
AHEAD OF THE CURVE
This paper contains 50%recycled material,30%post consumer
West/Victoria Plat Cost Sharing
September 29,2006
Page 2 of 2
If you have any questions,please contact Lys Hornsby,Utility Systems Director,at
(425)430-7332, or Ron Straka, Surface Water Utility Engineering Supervisor,at
(425)430-7248.
Sincerely,
Gregg Zi in an, P.E.
PBPW Administrator
cc: Lys Hornsby,P.E.,Utility Systems Director
Neil Watts,Development Services Directory
Ron Straka,P.E.,Surface Water Utility Supervisor
Allen Quynn,P.E.,Surface Water Utility Engineer
Mike Dotson,Development Services Engineering Specialist
H:\File Sys\SWP-Surface Water Projects\SWP 27-Surface Water Projects(Plan Review)\Victoria Pointe Plat\request
letter2.doc\RStp
(co Y � PLANNING/BUILDING/, PUBLIC WORKS DEPARTMENT
'�N�O� M E M O R A N D U M
DATE: September 19, 2006
TO: Gregg Zimmerman, Administrator /
FROM: Lys Hornsby, Utility Systems Director(ext. 7
SUBJECT: Victoria Pointe Plat Drainage System Cost cip`ation
Request
ISSUE:
Should the City of Renton share the cost of construction of an offsite storm system
required for the development of the Victoria Pointe Plat?
RECOMMENDATION:
The City should not participate in the construction cost of necessary offsite drainage
improvements for the Victoria Pointe Plat.
BACKGROUND:
There were two options for drainage from the Victoria Pointe Plat.
Option 1: Flow control onsite—construct detention to limit discharge to natural
conditions so as not to decrease capacity of the downstream system.
Option 2: Direct discharge exemption if there is not downstream flooding and the
discharge pipe has adequate capacity for the tributary area at full build out.
The developer chose option 2. Under this option, there were two pipes that could be used
for discharge from this plat. One pipe was experiencing some downstream flooding. The
other pipe was old, deteriorating and the capacity was unknown. The developer did some
exploration and TV work on the pipe, and based on their results, chose to use this pipe.
The Drainage Plan submitted by the developer states that the developer would "repair as
needed"the 12-inch pipe. Now it looks like this pipe will need to be replaced and the
developer is asking that the City share in the cost of the replacement. They feel that
because replacing this pipe may relieve some of the flooding problem in the other pipe,
the City should pay for this benefit.
The Surface Water Utility's view is that replacing the 12-inch pipe may not be the fix of
choice for the downstream flooding. The Utility has not evaluated options to alleviate
Zimmerman/Victoria Pointe
September 19,2006
Page 2 of 2
this flooding problem nor is there a project addressing this problem included in the
Surface Water Utility's 6-year CIP. Based upon the information provided, we cannot
determine whether simply replacing this section of pipe will alleviate the problem and to
what degree.
The Surface Water Utility does not feel it is appropriate to share in the cost of this pipe
replacement for the following reasons:
■ The replacement of the existing 12-inch pipe is a required part of the drainage
system for the plat.
■ We did not require the developer to upgrade or upsize the pipe.
■ The cost of replacing the 12-inch pipe is less than constructing onsite detention.
CONCLUSION:
The City should not participate in the construction cost of necessary offsite drainage
improvements for the Victoria Pointe Plat. The developer chose to meet the surface
water and drainage requirements of this plat by utilizing the direct discharge exemption
and offsite improvements versus onsite detention. By utilizing this exemption, the
developer was able to add at least one more lot to the plat and avoid the cost of
constructing detention. The savings resulting from fully utilizing the property and
avoiding the construction costs of detention facilities far exceed the costs of constructing
the necessary offsite improvements.
If you concur with this conclusion, the Surface Water Utility will prepare a letter to the
developer responding to their request for cost sharing.
Attachments
cc: Neil Watts,Development Services Director
Ron Straka,Surface Water Utility Supervisor
Mike Dotson,Plan Review Engineer
H:\File Sys\SWP-Surface Water Projects\SWP 27-Surface Water Projects(Plan Review)\Victoria Pointe
Plat\V ictoriaPointePlat.doc\LHtp
June 20, 2006
To: Gregg A. Zimmerman,P.E.,Administrator,
City of Renton
Planning,Building, Public Works
1055 S. Grady Way,
Renton WA 98055
From: Robert West,Developer,
Victoria Pointe L.L.0
3904 Park Ave. N.
Renton, WA 98056
Re. Off Site Storm Line Lake Washington Blvd.
Dear Mr. Zimmerman,
In January of this year, we went before Mr. Paul Kaufman,Hearings Examiner for the
City of Renton, for preliminary plat approval of Victoria Pointe, a 10 lot subdivision,
located in the 3700 block of Lake Washington Blvd. in the Kennydale area of Renton.
Prior to commencing the Hearing rocess, we investigated the existing storm water
conveyance-system between N. 36 St. and N. 38th St. along Lake Washington Blvd..
The city's storm water inventory manual of 2005 describes a 12 inch pipe coming from a
type 2 C. B. located-on the west side of our property and going north to a type 2 C. B.
located approx. 90 feet south of N. 38 h St.. The arrows in the manual indicate that the
water flows from south to north. The manual also shows a pipe going west from the 38t'
St. C. B. crossing under Lake Washington Blvd. under the R.R. tracks and out flowing
into Lake Washington. The manual does not give the size of this pipe but our
investigation found it to be 18 inch.
However, when we physically viewed the water in the C. B. in front of our property we
could see that the water-was not flowing north out of the C. B. but was coming from the
north into the C. B.. We then retained a firm to place a T. V. camera inside the pipe so
that we could observe what was going on. We found that 48 feet north of a type 1 C. B.,
that is located 55 feet north of our property the Ripe was collapsed We then placed the
camera in the pipe going south out of the N. 38 St. type 2 C. B.. We found another
collapsed pipe 18 feet south of the C. B.
The Drainage Plan we submitted for review states that we will"repair as needed"the 12
inch pipe going north and raise the invert elevation out of the type 2 C. B. so that a
portion of the water will flow north. Our plan also provides for some of the water to go
south and in the case of an emergency over some could go west. This plan was
reviewed and signed off on by the City.
We were almost finished with the installation of our on site storm and about to begin the
offsite system when I received a call from Mike Dotson, Engineering Specialist, City of
Renton, asking Me and our Engineer, Shelesh Tatu,to meet with him, Steve Pinkham,
Inspector,and Allen Quynn, P. E. Surface Water,City of Renton. Without going into all
of the discussion, some of it heated,that took place in an hour and a half meeting, the
following facts were determined.
1, There is an existing identified problem in that the Home Owners that live on Lake
Washington, across from our site have their homes flood on a regular basis. ( see
enclosed copy of letter from Joyce Kendrick-Goodwin).
2, The reason these homes are flooding is that all of the water that flows from the north
end of Wells Ave. west to Lake Washington Blvd. is supposed to then flow north into the
N 38 h St. C. B., but because the pipe has not been maintained and has been allowed to
be breached by other utilities the water now flows south into the Type 2 C. B. in front of
our site then west,thus contributing to the flooding.
3, There is sufficient depth in the Type 2 C. B.just south of N.381`St. to allow for
lowering the invert of a new pipe to such an extent that all of the water currently flowing
from N. Wells to Lake Washington Blvd. and the water that will flow from our on site
system to flow north, thus alleviating the existing identified problem.
We all agree that installing a new pipe at a lower elevation, in the long term,would be in
the best interests of the Home Owners along Lake Washington,the City, and our selves.
The questions are, what will it cost and who pays for the up grade?
Allen Quynn,of your Surface Water Systems Division estimated the cost to be $25,000
to $30,000.. 1 feel that is a reasonable number. It was the opinion of a majority of your
representatives at our meeting that since we would be solving an existing City problem
the City should participate in sharing the cost of the up grade. If the City and Victoria
Pointe L.L.C. were to share the cost equally it would not be overly burdensome on either
party. It was suggested by Mike Dotson that I write this letter to you in hope that we can
reach a fair and equitable resolution to this problem.
I will look forward to receiving your response.
Thank you for your consideration.
Robert West,Develo r,
Victoria Pointe L.L.C.
t
August 0,2005
City of Renton
Pianning/BuildingfPublic Works
Maintenance Service Division Wastewater Management
Renton City Hall - 61h Floor
1055 South Grady Way
Renton, WA 98055
Dear Siis,
We lire at 3715 Lake Washington,Boulevard N. on a private lane adjacent to the Burlington
Northern railroad tracks. We are writing on behalf of ourselves and several of our neighbors who
suffer from flooded garages whenever there is a substantial downpour of rain. We are deeply
concerned with the safety of the railroad as well as damW and motion to our horses.
Something must be done to correctt the problems of the inadequate storm drain located tuider the
Burlington Northern railroad tracks. This pipe drains storm water from Lake Washington
Boulevard and the hillside above. A number of times in heavy downpours,the drain pipe simply
could not handle the volume of water that has overflowed the drain pipe from the bank above onto
our strut below. This produces a huge waterfall overflowing from the bank,with tremendous
amounts of water gushing onto our street and into garages. it brings with it dirt,rocks and debris
from the hillside as it flows under the railroad tracks and onto our street, into basements and
garages. It happened again last might and three houses bad water, debris and silt in their garages.
About 4 years ago it was reported to the city that a sink hole was developing under the Burlington
Railroad tracks because of this inadequate drain. The city Maintenance Service Division came
down and made some changes to the drain,however it is obvious that whatever changes were
made, were IRA adequate. The problem still exists.
Please let us know what you can do to correct this situation.
Yours truly,
Joyce Kendrick-Goodwin
3715 Lake Washington Blvd N.
Renton, WA, 98056
CC: Burlington Northern Railway
Washington Dinner Train
Office of the Mayor,City of Renton
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DATE: L CONTACT:F1 I EXT.
FILE STATUS ❑ NEW OR ❑ EXISTING: FILE CODE(PRi-xx-xxxx):
LOCATION ❑ My Work Space: ❑ File Bay Shelf#: ❑ Other:
PROJECT NAME/FILE TITLE: V JC- Or 1!a PO
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Circle Size of Sewerline: 8" 10" 12" Circle One: ew/Replace/Extension
Circle Size of Stormline: 1-2 18" 24" Circle One Ne /Replace/Extension
CHECK EACH DISCIPLINE INVOLVED IN PROJECT Ltr Drwg #of sheets
Fe` TED ❑ ❑
(off site improvements) (include TESL)
TRO ❑ ❑
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❑ PLR (For Developer Files Only) ❑ getter only)
PLEASE CIRCLE THE DISCIPLINES WHICH NEED TO SIGN MYLARS
WATER WASTEWATER SURFACE WATER TRANSPORTATION FIRE
FOR FILE MAINTAINANCE USE ONLY
File Codes File Alias Date Entered and Labels Made
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fL PROPOSED OFF-SITE .NORM DRAINAGE IMPROVEMENTS PROFILE 1082 Kirkland Avenue, N.E., suite B
, BY: - DATE: Renton, Washington 98056
o SCALE: 1"=30' �ClZi/oc, Phone:-42 724020 , - Fax: 425-272-1021
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