HomeMy WebLinkAboutReg 2005-06-06 Item 5 - Public Hearing - Unclassified Use Permit for Sewer Lift Station Construction (56th Avenue South) x COUNCIL AGENDA SYNOPSIS
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IT EM INFORMATION
CAS NUMBER: 05-082 I ORIGINAL AGENDA DATE: June 6 2005
AGENDA ITEM TITLE Unclassified Use Permit and Public Hearing for the City's Public Works Department
CATEGORY Discussion Motion Resolution Ordinance Bid Awarzl Public Hearing Other
Attg Date Mtg Date Mtg Date ttg Date Mtg Date Mtg Date 06/06/05 illtg Date
'SPONSOR Council Mayor Adm Svcs DCD Finance Fire Legal P &R Police PIV
SPONSOR'S The City's Public Works Department seeks approval to construct a sewer lift station in the
SUMMARY Foster Point Area. In order to construct the lift station, Public Works must first obtain an
Unclassified Use Permit. Planning staff recommends approval of the application with the
conditions stated in the Staff Report.
REVIEWED BY COW Mtg. CA &P Cmte F &S Cmte Transportation Cmte
Utilities Cmte Arts Comm. Parks Comm. Planning Comm.
DATE: N/A
RECOMMENDATIONS:
SPONSOR /ADMIN. Approval with conditions
C0MM11TEE
COST IMPACT FUND SOURCE
EXPENDITURE REQUIRED AIv10UNT BUDGETED APPROPRIATION REQUIRED
$N /A $N /A $N /A
Fund Source: N/A
Comments: N/A
1 MTG. DATE RECORD OF COUNCIL ACTION
1 06/06/05
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1 MTG DATE ATTACHMENTS
06/06/05 Council Binder with staff report Crwey_ rikD
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1 1
City of Tukwila
Steven M. Mullet, Mayor
Department of Community Development
Steve Lancaster, Director
Staff Report to
The Tukwila City Council
Prepared June 1, 2005
HEARING DATE:
June 6, 2005
NOTIFICATION:
On Juiy 9, 2004 staff mailed a Notice of Application to
surrounding property owners and tenants. Notice of Hearing was
posted and mailed to surrounding properties on May 23,2005. A
Notice of Public Hearing was also published in the Seattle Times
on May 20, 2005.
PUBLIC MEETING:
July 14, 2004
FILE NUMBER:
Unclassified Use L04-0l0
APPLICANT:
City of Tukwila Public Works
OWNER:
Jerry Wheaton
REQUESTS:
Unclassified Use Penn it to construct and operate a sewer lift
station 13361 56th Ave South
ASSOCIATED PERMITS:
Building Penn its
SEPA DETERMINATION: Detennination of Non-Significance issued June 24,2004
LOCATION:
13361 56th Ave South, Parcel Number 217200-0160
COMPREHENSIVE
PLAN AND ZONE
DESIGNATION:
Low Density Residential (LOR)
STAFF:
Brandon J. Miles, Assistant Planner
6300 Southcenter Boulevard, Suite #100 · Tukwila, Washington 98188 · Phone: 206-431-3670 · Fax: 206-431-3665
A IT ACHMENTS:
A. Vicinity Map
B. Site Plan for Foster Point Sewer Lift Station
C. Pump House Plan and Elevations
D. Applicant's Response to Unclassified Use Criteria
BACKGROUND
The City of Tukwila Department of Public Works has submitted an Unclassified Use Permit for
the construction of a sewer lift statiQn at 13361 56th Ave South. The sewer lift station will serve
the Foster Point Neighborhood. Foster Point is currently not served by sanitary sewer, but
instead utilizes septic tanks and drain fields for waste disposal.
Only one person attended the public meeting held on July 14,2005 per the requirements for a
Type 5 permit (TMC 18.108.050). The attendee was the property owner where the lift station
would be constructed.
The City issued a Determination of Non-Significance (DNS) on June 24, 2004. The DNS
covered the entire sewer extension for the Foster Point Neighborhood.
FINDINGS
VICINITY/SITE INFORLvIATION
Sewer Lift Station Description
Structural
The lift station will occupy a 10' by 8'5"concrete pad. The concrete pad will be elevated six
inches off of the ground. The dimensions of the lift station structure are 8'6" by 8'8". The lift
station will be 12'6" tall (See Attachment B and C).
The lift station will be constructed primarily of split face CMU walls. The CMU walls will be
tan in color and have a flat finish. Two large steel doors will be located on the south side of the
building.
The roof of the building will be metal and be painted dark brown. The drains for the gutters will
be fern green in color.
The sewer pumps will be located below the surface of the lift station structure. The lift station
structure will be used to house control panels. Adjacent to the structure will be an emergency
generator. The emergency generator and the lift station structure will be enclosed with sound
proofing materials.
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The lift station will be surrounded with a six-foot tall chain-link fence. Plastic slats will be used
within the fence.
Operational
The purpose of the lift station is to move sewer waste material from the Foster Point
Neighborhood across the 56th Avenue Bridge and into the main se\ver line on Interurban Avenue
South.
The lift station will operate 24 hours a day.
As noted above, the sewer pumps will be located below ground. In the event of power failure
the lift station will include back up generators. The generators conduct automatic tests once a
week for a period 20-30 minutes. The generator is tested during day light hours and on
weekdays.
The lift station will be equipped with a telemetry device, which will provide feedback to City
staff on the operations of the facility. The device will also notify City staff in the event ofIift
station shut down or power failure.
Surrounding Land Uses
The lift station will be located within an existing residential neighborhood. Existing land uses in
the area are single family in nature (See Attachment A).
CRITERIA FOR UNCLASSIFIED USES (TMC 18.66. 060)
City Council approval of an unclassified use application shall be guided by the nine criteria of
the Zoning Code (18.66.060 TMC) and a determination that the project is consistent with
Tukwila plans and regulations (18.100.030 TMC.) The applicant's response to each of the
criteria is attached to this report (Attachment C). The City Council may approve the project as
proposed, establish conditions on the project approval, or deny the project.
1. Where appropriate and feasible, all facilities shall be undergrounded.
All mechanical portions of the lift station have been located underground. Only the control
panels and backup generator have been located above ground. The panels and generator will be
totally enclosed within a structure. Additionally, a fence will be used to prevent intrusion into
the site by the public.
2. The proposed use will not be materially detrimental to the public welfare or
injurious to the property or improvements in the vicinity.
The proposed lift station will allow the Foster Point Neighborhood to be served by sanitary
sewer. Existing homes in Foster Point are currently served by septic tanks. The presence of
sanitary sewer in Foster Point will allow existing homes that currently use septic tanks to
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gradually connect to sanitary sewer. These septic tanks and associated drain fields will be
abandoned per Seattle/King County Health requirements.
There are two possible negative impacts associated with this project:
1) Noise
2) Surcharging of domestic sewage
As noted the lift station will be equipped with pumps and a backup generator. To minimize
noise impacts the pumps will be located below ground and the entire structure will be
surrounded with a noise-damping b1;iffer.
The risk of surcharging of domestic sewage has been minimized by providing power redundancy
(back up generator) and telemetry to provide notification to City staff of mechanical issues.
3. The proposed use shall meet or exceed the same standards for parking, landscaping,
yards and other development regulations that are required in the district it wm
occupy.
The lift station will meet the setbacks__ofthe LDR District. Additionally, the lift station structure
is below the maximum height limitation for structures located within the LDR zone. The use
will not generate a measurable increase in traffic in the Foster Point Neighborhood. The
applicant has provided one parking stall for when City staff services the facility.
4. The proposed development shall be compatible generally with the surrounding land
uses.
The proposed use will provide domestic sewer service to an existing City neighborhood. Work
on the site will be limited to sporadic maintenance activities. The design of the pump station
structure is similar to surrounding single-family homes.
5. The proposed development shall to the maximum extent feasible be consistent with
and promote the goals, objectives, and policies of the Comprehensive Land Use
Policy Plan and applicable adopted area plans.
The construction of the lift station is consistent with the following two policies of the City's
Comprehensive Plan:
Policy 12.1.22
Design, construction and maintain facilities so as to minimize their impact
on adjacent neighborhoods and businesses.
The implementation method for this policy of the Comprehensive Plan is the use of public input
on siting of these facilities. Planning Staff held a public open house on July 14,2004.
Additionally, Public Works (the applicant) held three public meetings and open houses during
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the design stage of the Foster/A:l1entown Sewer Extension Project. These meetings were held on
February 12,2004, October 27,2004, and April 21, 2005.
The applicant has designed the project with noise dampers to miniinize any noise conflicts for
surrounding residential uses.
Policy 12.1.25
Serve all existing and potential residences and businesses with sewer
utility.
The construction ofthe sewer lift station will allow the Foster Point Neighborhood to be served
by sewer, thus meeting the City Comprehensive plan requirement of providing sewers.
6. The proposed unclassified use shall, to the maximum extent feasible, mitigate all
significant adverse environmental impacts on public and private properties. Full
consideration shall be given to:
a. alternative locations and/or routes that reduce or eliminate adverse impact;
&
b. alternative designs that reduce or eliminate adverse impacts.
All possible locations for the sewer lift station are within the Foster Point Neighborhood.
Alterative locations are constrained by service area, topography, the location of the Duwamish
River, and development costs.
There is no alternative design that would further minimize the potential negative impacts.
7. In the event that a proposed essential public facility creates an unavoidable
significant adverse environmental or economic impact on the community,
compensatory mitigation shall be required. Compensatory mitigation shall include
public amenities, incentives or other public benefits that offset otherwise
unmitigated adverse impacts of the essential public facility. \Vhere appropriate,
compensatory mitigation shall be provided,as close to the affected area as possible.
The proposal is not an essential public facility of countywide or statewide nature.
8. For uses in residential areas, applicants shall demonstrate that there is no reasonable
nonresidential alternative site for the use.
The purpose of the sewer lift station is to provide sewer to an existing residential neighborhood.
All possible locations for the sewer lift station are within the residential neighborhood. The
topography and location of the river channel precludes an alternate site for the lift station outside
of the neighborhood.
9. For uses in residential areas, applicants shall demonstrate that the use provides some
tangible benefit for the neighborhood.
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The sewer lift station wil1 aUow sewer to operate in a section of the City that is not currently
served by sewer. Septic tanks with drain fields are currently utilized in the neighborhood for
disposal of domestic sewage. The use of septic tanks severely limits the prospect of these
properties short platting in the future.
CONCLUSIONS
Conclusions regarding the unclassified use' criteria, Section 18.66.060 TMC, are as follows.
(1) \Vhere appropriate and feasible all facilities shall be undergrounded.
The applicant has placed underground those items capable of being put underground. Only the
control panel, generator, and pump house have been placed above ground.
(2) The proposed use will not be materially detrimental to the public welfare or
injurious to the property or improvement in the vicinity.
The applicant has mitigated possible negative impacts of the proposal by providing backup
power and by providing noise dampers. Staffhas added one condition to address any possible
noise impacts associated with the project.
(3) The proposed use shall meet or exceed the same standards for parking, landscaping,
yards and other development regulations that are required in the district it will
occupy.
The project meets a11 applicable design standards for the LDR zone.
(4) The proposed development shall be compatible generally with the surrounding land
uses.
The use of a pitched roof and earth tone colors a110ws the sewer lift station to blend into the
existing residential neighborhood. Staff has provided a condition to insure that the fence slats
match the colors of the building.
(5) The proposed development shall to the maximum extent feasible be consistent with
and promote the goals objective and policies of the Comprehensive Land use Policy
Plan and applicable adopted area plans.
The lift station allows the City to meet a Comprehensive Plan Goal of providing sewer to aU
residents in the City.
(6) The proposed unclassified use shall to the maximum extent feasible mitigate all
significant adverse environmental impacts on public and private properties. Full
consideration shall be given to:
a. alternative locations and/or routes that reduce or eliminate adverse impact; &
b. alternative designs that reduce or eliminate adverse impacts.
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The applicant has provided noise buffers to reduce noise generated from the site. The testing of
the generator during the weekdays will reduce possible conflicts with surrounding residents. The
applicant has provided redundancy to ensure that in the event of pump failure or power failure
there will not be an adverse impact to surrounding uses.
(7) In the event that a proposed essential public facility creates an unavoidable
significant adverse environmental or economic impact on the community,
compensatory mitigation shall be required. Compensatory mitigation shall include
public amenities, incentives or other public benefits that offset otherwise
unmitigated adverse impacts of the essential public facility. Where appropriate,
compensatory mitigation shall be provided as close to the affected area as possible.
The proposal is not an essential public facility of countywide or statewide nature.
8. For uses in residential areas, applicants shall demonstrate that there is no reasonable
nonresidential alternative site for the use.
In order to provide sewer to the Foster Point Neighborhood the sewer lift station must be located
within the residential neighborhood.
9. For uses in residential areas, applicants shall demonstrate that the use provides some
tangible benefit for the neighborhood.
The proposed use will likely provide the following tangible benefits:
1. Increase property values
2. Allow existing homes to expand
3. Allow for existing lots to be platted (divided) into additional lots
4. Reduce environment impacts associated with septic systems
RECOMMENDA TIONS
Staff recommends that the City Council adopt the findings and conclusions of the staff report and
approve an unclassified use permit for a sewer lift station at 13361 56th Ave South with the
following conditions:
1. Prior to issuance of any building permits for the sewer lift station, the applicant shall
submit a noise study, prepared by a qualified professional showing compliance with
Chapter 8.22 "Noise" of the Tukwila Municipal Code.
2. The fence slats placed in the surrounding perimeter chain-link fence shall be green in
color.
Unclassified Use Permits are valid for one year from the date of approval by the City Council
(TMC 18.66.070).
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