HomeMy WebLinkAboutCritical Areas Regulations - Private Surface Water Systems (12/4/2006)"-.. `mwe
CITY OF RENTON, WASHINGTON
ORDINANCE NO. 5308
AN ORDINANCE OF THE CITY OF RENTON, WASHINGTON,
ADDING A SUBSECTION 4-3-050C5D.iv TO THE TABLE ENTITLED
"EXEMPT ACTIVITIES PERMITTED WITHIN CRITICAL AREAS AND
ASSOCIATED BUFFERS" TO CHAPTER 3 "ENVIRONMENTAL
REGULATIONS AND OVERLAY DISTRICTS" OF TITLE IV
(DEVELOPMENT REGULATIONS) OF ORDINANCE NO. 4260
ENTITLED "CODE OF GENERAL ORDINANCES OF THE CITY OF
RENTON, WASHINGTOW TO ADD AN EXCEPTION FOR STORM
WATER PIPING IN A GEOLOGIC HAZARD AREA.
THE CITY COUNCIL OF THE CITY OF RENTON, WASHINGTON, DOES ORDAIN
AS FOLLOWS:
SECTION L Section 4- 3-05005d of the Table entitled `Exempt Activities
Permitted Within Critical Areas and Associated Buffers" of Chapter 3 "Environmental
Regulations and Overlay Districts" is hereby amended by adding a subsection iv to read as
follows:
Storm Drainage Piping: Installation of new storm drainage lines in any geologic
hazard area when a geotechnical report clearly demonstrates that the installation
would comply with the criteria listed in RMC 4-3-050J2b and that the instillation
would be consistent with each of the purposes of the geologic hazard regulations
listed in RMC 4-3-050A4. Also, to qualify for the exemption, the report must
propose appropriate mitigation for any potential impacts identified in the report.
SECTION H. The Table modified in Section I above shall be further modified in
Section 5d10 by adding an "X" to the column headed Geologic Hazard.
SECTION HL This Ordinance shall be effective upon its passage, approval, and
five days after its publication
ORDINANCE NO. 5308 IWO
PASSED BY THE CITY COUNCIL this 24th day of September , 2007.
'), '.(here-,
Bonnie I. Walton, City Clerk
APPROVED BY THE MAYOR this 24th day of September , 2007.
Approved as to form:
Lawrence J. Warren, City Attorney
Date of Publication 9/29/2007
ORD.13 80: 0 8/ 17/07 : ch
Kathy Keol Mayor
2
September 24, 2007 Renton City Council Minutes
Page 329
Community Services: City Finance Committee Chair Persson presented a report recommending
Hall Lease (5th Floor), concurrence in the staff recommendation to approve a five-year lease with
Communities in Schools of Communities in Schools of Renton for space on the fifth floor of City Hall. The
Renton Committee further recommended that the Mayor and City Clerk be authorized
to sign the lease. MOVED BY PERSSON, SECONDED BY LAW, COUNCIL
CONCUR IN THE COMMITTEE REPORT. CARRIED.
Development Services: Fees Finance Committee Chair Persson presented a report recommending
Waiver, The Chelsea & Blakey concurrence in the staff recommendation to approve the waiver of building,
Townhomes
development, and impact fees as provided by City Code 4-1-210B, Owner -
Occupied Housing Incentive, at the request of proponents of The Chelsea
(condominiums) and the Blakey Townhomes projects. MOVED BY
PERSSON, SECONDED BY LAW, COUNCIL CONCUR IN THE
COMMITTEE REPORT. CARRIED.
RESOLUTIONS AND
The following resolution was presented for reading and adoption:
ORDINANCES
Resolution #3905
A resolution was read granting authority for an interfund loan to Fund 318,
Finance: Temporary Interfund
South Lake Washington Infrastructure Project. MOVED BY LAW,
Loan to S Lake Washington
SECONDED BY PERSSON, COUNCIL ADOPT THE RESOLUTION AS
Infrastructure Project Fund 318
READ. CARRIED.
The following ordinance was presented for first reading and advanced for
second and final reading:
CAG: 06-130, Airport
An ordinance was read amending the 2007 Budget by transferring $75,000 from
Maintenance Dredging &
the Airport Office Rehabilitation Project and $25,000 from the 2007 Precision
Shoreline Mitigation,
Approach Project to the Maintenance Dredging and Shoreline Mitigation
Parametrix, Budget Amend
Project to pay for the change of scope in the contract with Parametrix, Inc.
MOVED BY PALMER, SECONDED BY CORMAN, COUNCIL ADVANCE
THE ORDINANCE FOR SECOND AND FINAL READING. CARRIED.
Ordinance #5307
Following second and final reading of the above -referenced ordinance, it was
CAG: 06-130, Airport
MOVED BY PALMER, SECONDED BY CORMAN, COUNCIL ADOPT
Maintenance Dredging &
THE ORDINANCE AS READ. ROLL CALL: ALL AYES. CARRIED.
Shoreline Mitigation,
Parametrix, Budget Amend
The following ordinance was presented for second and final reading and
adoption:
Ordinance #5308
An ordinance was read adding a Subsection 4-3-05005D.1v to the table entitled
Development Services: Private
"Exempt Activities Permitted within Critical Areas and Associated Buffers" to
Stormwater Utilities in
Chapter 3, Environmental Regulations and Overlay Districts, of Title IV
Geologically Hazardous Areas
(Development Regulations) of City Code to add an exception for stormwater
j y
piping in a geologic hazard area. MOVED BY CLAWSON, SECONDED BY
�l
NELSON, COUNCIL ADOPT THE ORDINANCE AS READ. ROLL CALL:
ALL AYES. CARRIED.
NEW BUSINESS
Councilman Clawson reported that Council held a workshop last Friday
Annexation: Benson Hill
regarding the Benson Hill Communities Annexation transition plan. He stated
Communities, S 200th St &
that the Fire Chief presented his plan that entails moving around and
128th Ave SE
redeploying fire trucks and aid cars, which may be accomplished without
increasing the budget. Mr. Clawson further stated that the response times will
be even better.
September 17, 2007 rr.. Renton City Council Minutes I,.,,. Page 315
MOVED BY NELSON, SECONDED BY BRIERS, COUNCIL APPROVE
THE CONSENT AGENDA AS PRESENTED WITH THE ADDED ITEM OF
CORRESPONDENCE. CARRIED.
UNFINISHED BUSINESS
Council President Nelson presented a Committee of the Whole report regarding
Committee of the Whole
the downtown wayfinding system manufacture and installation contract. The
EDNSP: Downtown
Committee recommended concurrence in the staff recommendation to approve
Wayfinding System
and authorize the Mayor and City Clerk to sign a contract with Sea Reach, Ltd.
Installation, Sea Reach
for $221,180 to manufacture and install the prioritized components of the
downtown wayfinding system that will improve the system of signage into and
around downtown Renton.
The Committee further recommended that a public meeting be set for
10/15/2007 to discuss the downtown wayfinding system design and color
scheme. MOVED BY NELSON, SECONDED BY BRIERE, COUNCIL
CONCUR IN THE COMMITTEE REPORT.*
Responding to Mayor Keolker's inquiry, Council President Nelson explained
that the purpose of the public meeting is to view actual color samples and
materials for the gateway signs in particular, and to invite comment from the
public.
*ROLL CALL: FIVE AYES: NELSON, CLAWSON, LAW, BRIERS,
CORMAN; TWO NAYS: PALMER, PERSSON. MOTION CARRIED.
Community Services Community Services Committee Chair Corman presented a report
Committee recommending concurrence in Mayor Keolker's appointments to the Airport
Appointment: Airport Advisory Committee as follows: Todd Banks (Airport -at -Large alternate
Advisory Committee position) for a term expiring 5/7/2010, and Matthew Devine (Talbot Hill
neighborhood alternate position) for a term expiring 5/7/2008. MOVED BY
CORMAN, SECONDED BY PALMER, COUNCIL CONCUR IN THE
COMMITTEE REPORT. CARRIED.
RESOLUTIONS AND
ORDINANCES
Development Services: Private
Stormwater Utilities in
Geologically Hazardous Areas
TA
The following ordinance was presented for first reading and referred to the
Council meeting of 9/24/2007 for second and final reading:
An ordinance was read adding a Subsection 4-3-050C5D.iv to the table entitled
"Exempt Activities permitted within Critical Areas and Associated Buffers" to
Chapter 3, Environmental Regulations and Overlay Districts, of Title IV
(Development Regulations) of City Code to add an exception for stormwater
piping in a geologic hazard area. MOVED BY CLAWSON, SECONDED BY
BRIERE, COUNCIL REFER THE ORDINANCE FOR SECOND AND FINAL
READING ON 9/24/2007. CARRIED.
The following ordinances were presented for second and final reading and
adoption:
Ordinance #5301 An ordinance was read annexing approximately 4.89 acres of property generally
Annexation: Anthone',Talbot located immediately south of S. 55th St. and immediately east of Talbot Rd. S.;
Rd S & S 55th St Anthone' Annexation. MOVED BY BRIERE, SECONDED BY CLAWSON,
COUNCIL ADOPT THE ORDINANCE AS READ. ROLL CALL: ALL
AYES. CARRIED.
Ordinance #5302 An ordinance was read establishing the zoning classification for approximately
Annexation: Anthone', R-4 4.89 acres, generally located immediately south of the south side of S. 55th St.
Zoning on the north and immediately east of Talbot Rd. S., annexed within the City of
Renton to R-4 (Residential - four dwelling units per acre) zoning; Anthone"
Annexation. MOVED BY BRIERS, SECONDED BY CLAWSON, COUNCIL
`December 4, 2006 ^✓ Renton City Council Minutes ..,` Page 427
family homelessness is a growing problem in King County, Mr. McDougall-
Treacy described the services provided by the organization, including mental
health and chemical dependency outreach.
Alisha Mark, King County Sexual Assault Resource Center (KCSARC) Board
Member, 3625 NE loth Ct., Renton, 98056, thanked the City for its support of
human services. She indicated that KCSARC has served the Renton community
for 30 years, and is committed to continue serving victims and families of
sexual assault.
Correspondence was read from Kathleen Southwick, Crisis Clinic Executive
Director, 1515 Dexter Ave. N., Seattle, 98109, supporting the inclusion of the
additional $157,000 in human services funding in the 2007 Budget. Pointing
out that the Crisis Clinic's 24-hour crisis line was not included in the funding
recommendations, she expressed her hope that the inclusion of the additional
funding will allow the City to continue to support the crisis line.
Correspondence was read from Denise Klein, Senior Services Executive
Director, 2208 2nd Ave., Seattle, 98121, expressing appreciation for the
recommended funding for the Senior Services' Meals on Wheels and Volunteer
Transportation programs in 2007 and 2008.
There being no further public comment, it was MOVED BY LAW,
SECONDED BY NELSON, COUNCIL CLOSE THE PUBLIC HEARING.
CARRIED.
Development Services: Private
This being the date set and proper notices having been posted and published in
Stormwater Utilities in
accordance with local and State laws, Mayor Keolker opened the public hearing
Geologically Hazardous Areas
to consider revisions to the critical areas regulations of City Code to allow
private surface water systems to be installed and discharge in geologically
hazardous areas, when such utilities would reduce erosion and improve slope
stability.
Jennifer Henning, Current Planning Manager, reported that only publicly -
owned surface water facilities may develop and install conveyance pipes on
steep slopes. She explained that a public utility can run a stormwater line down
a steep slope and disperse water at the bottom, but a private developer must
disperse stormwater at the top of the slope and risk erosion, landslides, and
slope instability.
Pointing out that development in critical areas is prohibited unless exempted by
City Code, Ms. Henning stated that staff recommends allowing private
stormwater facilities the same exemption as public stormwater facilities. She
indicated that staff will conduct a SEPA environmental review of the matter,
and then present the related ordinance for first reading.
Public comment was invited. There being none, it was MOVED BY LAW,
SECONDED BY CORMAN, COUNCIL CLOSE THE PUBLIC HEARING.
CARRIED.
ADMINISTRATIVE
Chief Administrative Officer Jay Covington reviewed a written administrative
REPORT
report summarizing the City's recent progress towards goals and work programs
adopted as part of its business plan for 2006 and beyond. Items noted included:
Washington State Department of Transportation and the City of Renton will
hold a Springbrook Creek Wetland and Habitat Mitigation Bank project
Y
City of Renton
PUBLIC INFORMATION HANDOUT
December 4, 2006
Critical Areas Regulations Code Revisions
For additional information, please contact: Jennifer Henning, Project Manager; City of
Renton Development Services Division; (425) 430-7286
ISSUE:
Geologic hazard areas including steep slopes are regulated by the City's Critical Areas
Regulations. Development is prohibited in critical areas and their buffers unless
exempted per RMC 4-3-05005. Currently, publicly owned surface water facilities may
develop and install conveyance pipes on steep slopes in order to discharge storm water
at the bottom. However, private developers are not allowed the same exemption.
By not allowing an exemption for private development, the regulations only permit the
discharge of stormwater at the top of a steep slope, which can lead to slope instability,
erosion, and possible landslides. The amendment would allow private developers to
collect the storm water from the development, run the pipe down the steep slope, and
disperse the water at the base of the slope. This is the same exemption afforded public
facilities.
RECOMMENDATION:
The Development Services Division recommends that the Council accept public
testimony regarding the proposed code amendment. Further, Development Services
recommends that the Council amend the Critical Areas Regulations to exempt private
development when installing stormwater conveyance pipes and dispersion systems in
geologic hazard areas.
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CITY OF RENTON
NOTICE OF PUBLIC HEARING
RENTON CITY COUNCIL
NOTICE IS HEREBY GIVEN that the Renton City Council has fixed the 4th day of
December, 2006, at 7:00 p.m. as the date and time for a public hearing to be held in the
seventh floor Council Chambers of Renton City Hall, 1055 S. Grady Way, Renton, WA
98055, to consider the following:
Amendments to the Critical Areas Regulations of Renton Municipal Code to
allow private surface water systems to be installed and discharge in geologically
hazardous areas, when such utilities would reduce erosion and improve slope
stability
All interested parties are invited to attend the hearing and present written or oral
comments regarding the proposal. Renton City Hall is in compliance with the American
Disabilities Act, and interpretive services for the hearing impaired will be provided upon
prior notice. For information, call 425-430-6510.
i
Bonnie I. Walton
City Clerk
Published King County Journal
November 26, 2006
Account No. 50640
11/22/2006 - Notice sent to one Party of Record per attached label.
L. Johnson
cc: Jennifer Henning
Jam and Smudge Free Printing
Use Avery® TEMPLATE 51600
Phil Kitzes
PK Enterprises
23035 SE 263`d St.
Maple Valley, WA 98038
www.avery.com AVERW 51600
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CITY OF RENTON
NOTICE OF PUBLIC HEARING
RENTON CITY COUNCIL
NOTICE IS HEREBY GIVEN that the Renton City Council has fixed the 4th day of
December, 2006, at 7:00 p.m. as the date and time for a public hearing to be held in the
seventh floor Council Chambers of Renton City Hall, 1055 S. Grady Way, Renton, WA
98055, to consider the following:
Amendments to the Critical Areas Regulations of Renton Municipal Code to
allow private surface water systems to be installed and discharge in geologically
hazardous areas, when such utilities would reduce erosion and improve slope
stability
All interested parties are invited to attend the hearing and present written or oral
comments regarding the proposal. Renton City Hall is in compliance with the American
Disabilities Act, and interpretive services for the hearing impaired will be provided upon
prior notice. For information, call 425-430-6510.
Bonnie I. Walton
City Clerk
Published King County Journal
November 26, 2006
Account No. 50640
November 20, 2006
Renton City Council Minutes ,,.. Page 403
UNFINISHED BUSINESS
Utilities Committee Chair Clawson presented a report recommending
Utilities Committee
concurrence in the staff recommendation to approve the proposed amendments
Utility: Public Works
to the public works construction permit fees (Water Construction Permits,
Construction Permit Fees
Water Meter Installations, Water Meter Processing, and Wastewater and
Surface Water Construction Permits) and incorporate them into an ordinance.
The Committee further recommended that the ordinance regarding this matter
be presented for first reading. MOVED BY CLAWSON, SECONDED BY
BRIERS, COUNCIL CONCUR IN THE COMMITTEE REPORT. CARRIED.
(See page 406 for ordinance.)
Utility: WRIA 8 & 9 Salmon
Utilities Committee Chair Clawson presented a report regarding the Water
Habitat Plan Implementation,
Resource Inventory Area (WRIA) 8 and WRIA 9 Salmon Habitat Plan
Interlocal Agreements
interlocal agreements. The Committee recommended concurrence in the staff
recommendation to approve a resolution authorizing the Mayor and City Clerk
to execute the interlocal agreements between the City and other jurisdictions
participating in the implementation of the WRIA 8 and WRIA 9 Salmon Habitat
Plans for the time period of 2007-2015. MOVED BY CLAWSON,
SECONDED BY NELSON, COUNCIL CONCUR IN THE COMMITTEE
REPORT. CARRIED. (See page 406 for resolution.)
Planning & Development
Planning and Development Committee Chair Briere presented a report
Committee
regarding the 2007 Comprehensive Plan pre -applications and requests. The
Comprehensive Plan: 2007
Committee recommended concurrence in the staff recommendation to approve
Amendments, Pre -Applications
the request for pre -application review for Application 2007-Pre-01, Alan
Kunovsky's request for review of land use designation at 326 Park Ave. N., and
Application 2007-Pre-02, O'Farrell Properties LLC's request for land use
designation and multi -family policy review at 188 Hardie Ave. SW, including
four parcels of contiguous property between Rainier Ave. S., Hardie Ave. S.,
and SW Victoria St.
The Committee further recommended that these applications be forwarded to
the Planning Commission for inclusion in the 2007 work program pending
successful completion of an application for a Comprehensive Plan amendment
by 12/15/2006. MOVED BY BRIERS, SECONDED BY CLAWSON,
COUNCIL CONCUR IN THE COMMITTEE REPORT. CARRIED.
Development Services: Private
Stormwater Utilities in
Geologically Hazardous Areas
?w
Planning and Development Committee Chair Briere presented a report
regarding private stormwater utilities in geologically hazardous areas. The
Committee met to discuss the proposed revision to the critical areas regulations,
which would exempt new surface water discharges from private storm systems
on steep slopes. Currently, public surface water discharges are allowed to
discharge on or near steep slopes in order to improve slope stability. However,
private stormwater systems are not permitted to discharge, even when such
utilities would reduce erosion and improve slope stability.
The Committee recommended that a public hearing regarding the proposed
amendments be held by the City Council on 12/4/2006. MOVED BY BRIERE,
SECONDED BY CLAWSON, COUNCIL CONCUR IN THE COMMITTEE
REPORT. CARRIED.
Development Services: Planning and Development Committee Chair Briere presented a report
Wireless Communication recommending concurrence in the staff recommendation to approve the City
Facilities in Residential Zones Code amendments to permit wireless communication facilities within public
rights -of -way within residential zones and adopt the ordinance. MOVED BY
BRIERE, SECONDED BY CLAWSON, COUNCIL CONCUR IN THE
COMMITTEE REPORT. CARRIED. (See page 407 for ordinance.)
`7 t 3 BY
CiTV COUNCIL
PLANNING AND DEVELOPMENT COMMITTEE mate
COMMITTEE REPORT
November 20, 2006
Amendments to Code Regulating Geologically Hazardous Areas
(Referred November 6, 2006)
The Planning and Development Committee met to discuss proposed revision to the Critical
Areas Regulations which would exempt new surface water discharges from private storm
systems on steep slopes. Currently, public surface water discharges are allowed to discharge
on or near steep slopes in order to improve slope stability. However, private storm water
systems are not permitted to discharge, even when such utilities would reduce erosion and
improve slope stability.
The Planning and Development Committee recommends that the public hearing for the
proposed amendments be held by the City Council on Monday, December 4, 2006.
Teri Briere, Chair
Dan Clawson, Vice Chair
Marcie Palmer, Member
cc: Gregg Zimmerman, PB/PW Administrator
Neil Watts, Development Services Director
Jennifer Henning, Current Planning Manager
planning and dev geologic hazardous areas.doc\ Rev 01 / 06 bh
November 6, 2006
Renton City Council Minutes - - Page 376
AJLS: East Renton Plateau Administrative, Judicial and Legal Services Department recommended approval
PAA, King County
of an agreement with King County regarding the East Renton Plateau Potential
Annexation Area. Refer to Committee of the Whole.
AJLS: Potential Annexation
Administrative, Judicial and Legal Services Department recommended approval
Areas, King County
of an agreement with King County relating to the potential future annexation of
four of Renton's Potential Annexation Areas. Refer to Committee of the Whole.
Community Services: Ivars
Community Services Department recommended approval to allocate
Contract Unanticipated
unanticipated revenue in the amount of $38,760 from Ivar's, Inc. (as per Ivar's
Revenue Allocation, Holiday
contract with the City) to supplement expenditures associated with the holiday
Lights
lights program. Council concur. (See page 378 for ordinance.)
Community Services: Park
Community Services Department requested authorization to increase the park
Fund Budget Increase, Staffing
fund budget in the amount of $35,000 for intermittent parks and recreation
Expenses
staffing expenses. Refer to Finance Committee.
Court Case: Patrick Gress,
Court Case filed on behalf of Patrick Gress by Peter T. Connick, 157 Yesler
CRT-06-004
Way, #518, Seattle, 98104, requesting removal of forfeiture proceeding to
district court and return of plaintiffs property seized by the Renton Police
Department on 3/23/2006. Refer to City Attorney and Insurance Services.
Development Services:
Development Services Division recommended acceptance of a deed of
Meadow II Short Plat, ROW
dedication for additional right-of-way at Meadow Ave. N. to fulfill a
Dedication, Meadow Ave N,
requirement of the Meadow II Short Plat. Council concur.
SHP-05-157
Development Services:
Development Services Division recommended acceptance of a deed of
Windstone 11 Short Plat, ROW
dedication for additional right-of-way at Mt. Baker Ave. NE and at Nile Ave.
Dedication, Mt Baker Ave NE
NE to fulfill a requirement of the Windstone II Short Plat. Council concur.
& Nile Ave NE, SHP-04-124
Development Services:
Development Services Division recommended acceptance of a deed of
Windstone III Short Plat,
dedication for additional right-of-way at Kitsap Pl. NE to fulfill a requirement
ROW Dedication, Kitsap PI
of the Windstone III Short Plat. Council concur.
NE, SHP-04-136
Development Services: Private
Development Services Division requested approval to allow private stormwater
Stormwater Utilities in �
utilities to be installed in geologically hazardous areas. Refer to Planning and
Geologically Hazardous Areas
Development Committee.
Development Services:
Development Services Division recommended approval to permit wireless
Wireless Communication
communication facilities in residential zones within public rights -of -way. Refer
Facilities in Residential Zones
to Planning and Development Committee.
Annexation: Aster Park,
Economic Development, Neighborhoods and Strategic Planning Department
Sunset Blvd NE
submitted 60% Direct Petition to Annex for the proposed Aster Park
Annexation and recommended a public hearing be set on 11/20/2006 to
consider the petition and future zoning; 19.85 acres located along the south side
of Sunset Blvd. NE, west of 148th Ave. SE. Council concur.
Annexation: Hudson, Benson
Economic Development, Neighborhoods and Strategic Planning Department
Rd S & SE 168th St
recommended a public hearing be set on 11/20/2006 to consider the proposed
Hudson Annexation and future zoning of the 13.69-acre site located in the
vicinity of Benson Rd. S. and SE 168th St. Council concur.
®-w-ITY OF RENTON COUNCIL AGENDA-q!fILL
Submitting Data: Planning/Building/Public Works
Dept/Div/Board Development Services Division
Staff Jennifer Henning, x7286
Contact..... .
Subject:
Code amendment to allow private storm water utilities to be
installed in geologically hazardous areas.
Exhibits:
Issue Paper
Code Revision
Al #: 1`
For Agenda of.
Agenda Status
Consent ..............
Public Hearing...
Correspondence
Ordinance..........
Resolution........ .
Old Business........
New Business.......
Study Sessions.......
Information...
Recommended Action: Approvals:
Refer to Planning & Development Committee Legal Dept.........
Finance Dept......
Other.
Fiscal Impact: None
Expenditure Required... Transfer/Amendment.......
Amount Revenue
Budgeted.......... Generated.........
Total Project Budget City Share Total Project
SUMMARY OF ACTION:
November 6, 2006
X
An amendment to RMC 4-3-050C.5.d.i is needed which would allow private storm water facilities to be
installed in geologically hazardous areas in order to reduce the risks of slope instability and landslides near
private development.
STAFF RECOMMENDATION:
Approve the amendment to the exempt activities table and adopt the ordinance.
H:\Division.s\Develop.ser\Dev&plan.ingWeiser\Issue Papers\StormwaterAgendaBill.doc
PLANNING/BUILDING/PUBLIC WORKS
♦ ♦ DEPARTMENT
M E M O R A N D U M
DATE: October 24, 2006
TO: Randy Corman, Council President
Members of the Renton City Council
CC:- Kathy Keolker, Mayor
FROM: �"Gregg Zimmerman, Administrator
STAFF CONTACT:' Jennifer Henning, Current Planning Manager, ext. 7286
SUBJECT: Exemption for Private Surface Water Utilities
ISSUE:
Should the City of Renton allow private individuals to construct surface water utilities in
geologically hazardous areas when such utilities would improve slope stability?
RECOMMENDATION:
Staff recommends adopting an ordinance amending RMC Section 4-3-050C.5.d.i to
exempt New Surface Water Discharges in Geologic Hazard Areas.
BACKGROUND SUMMARY:
Controlling the runoff which occurs during rainstorms is a problem which must be
addressed in developed areas. This problem is especially compounded when
developments are situated near steep slopes. The runoff from these developments, which
empties down the steep slopes, can lead to slope instability, erosion, and possible
landslides.
In order to reduce the risks associated with runoff on steep slopes, storm water facilities
such as flow spreaders can be installed to release storm water in a controlled manner and
prevent the development of channels and gullies. Piping can be laid to collect and
redirect surface water before it reaches the steep slope. Installations like these would
increase slope stability and reduce the risk of erosion and landslides if installed properly.
In the 2004 Comprehensive Plan, the City Council adopted a policy which directly
addresses the problem of surface water runoff.
Policy EN-29 states: "Route storm water runoff from new development to avoid gully
erosion or landslides in ravines and steep hillsides."
Page 2 of 2 1%W
October 24, 2006
M
Under the current Renton Municipal Code, storm water facilities may be built by public
entities but cannot be built on steep slopes by private individuals. This is contrary to the
goal of the comprehensive plan policy. In this case, development of private utilities on
steep slopes, with the intent of controlling runoff, would be in line with the policies of the
comprehensive plan and would improve, rather than reduce the quality and safety of
geologically hazardous slopes.
CONCLUSION:
If an amendment to the exempt activities table was approved by Council, staff believes
this would provide private citizens the opportunity to install runoff utilities and improve
the stability of steep slopes. This would provide long term benefits to the quality of
geologically hazardous areas and reduce risks associated with landslides and erosion.
4-3-050C
MM
Aquifer
Flood
Geologic
Habitat
Streams and
Protection
Hazard
Hazard
Conservation
Lakes: Class
EXEMPT ACTIVITY
Area
Area
Area
Area
2 to 4
Wetlands
d. Surface MOO.
A
i. New Surface Water Discharges: New
X
X
X
surface water discharges to wetland Catego-
ries 1, 2 and 3, or buffers of Categories 1, 2
and 3, and to streams or lakes from deten-
tion facilities, presettlement ponds or other
surface water management structures; pro-
vided, the discharge meets the requirements
of the Storm and Surface Water Drainage
Regulations (RMC 4-6-030); will not result in
significant adverse changes in the water
temperature or chemical characteristics of
the wetland or stream/lake water sources;
and there is no increase in the existing rate
of flow unless it can be demonstrated that
the change in hydrologic regime would result
in equal or improved wetland or stream/lake
functions and values. Where differences
exist between these regulations and RMC
4-6-030, these regulations will take prece-
dence.
ii. New or Modified Regional Stormwater
X
X
X
Facilities: Regional stormwater management
facilities to be operated and maintained
under the direction of the City Surface Water
Utility that are proposed and designed con-
sistent with the Washington State Depart-
ment of Ecology Wetlands and Stormwater
Management Guidelines or meeting equiva-
lent objectives. For habitat conservation
areas, this exemption applies only to Cate-
gory 1 wetlands.
iii. Flood Hazard Reduction: Implementa-
X
X
tion of public flood hazard reduction and
public surface water projects, where habitat
enhancement and restoration at a 1:1 ratio
are provided, and appropriate Federal and/
or State authorization has been received.
X
X
X
i. Relocation of Existing Utilities out of Criti-
X1
X X
cal Area and Buffer: Relocation out of critical
areas and required buffers of natural gas,
cable, communication, telephone and elec-
tric facilities, lines, pipes, mains, equipment
and appurtenances (not including substa-
tions), with an associated voltage of fifty five
thousand (55,000) volts or less, only when
required by a local governmental agency,
and with the approval of the City. Disturbed
areas shall be restored.
If a hazardous material, activity, and/or facility that is exempt pursuant to this Section has a significant or substantial
potential to degrade groundwater quality, then the Department Administrator may require compliance with the aquifer
protection requirements of this Section otherwise relevant to that hazardous material activity and/or facility.
(Revised 6/05) 3 - 18.2