ORD 2582 ORDINANCE NO . � S )--
AN ORDINANCE adopting a new Chapter 14 . 02 relating to
stormwater control and modifying the provisions of Section
17 . 19 . 020 and 17 . 19 . 040 .
WHEREAS , to meet the requirements of the Federal Clean Water Act , the State of
Washington Department of Ecology was given the authority to issue municipal stormwater
permits to designated communities in Washington that discharge stormwater into surface water
bodies ; and
WHEREAS , the Washington State Department of Ecology issued the City of Camas a
Western Washington Phase II Municipal Stormwater Permit under the National Pollutant
Discharge Elimination System Program on January 17 , 2007 ; and
WHEREAS , the Washington State Department of Ecology further mandated that an
Ordinance be adopted no later than mid - February 2010 incorporating stormwater control and
pollution prevention measures consistent with said permit ; and
WHEREAS , the City of Camas has constituted a Stormwater Ordinance Committee
consisting of representatives from the Camas City Council , local business representatives , civil
engineers , and City staff for the purpose of preparing a draft of a Stormwater Control Ordinance
under Chapter 14 . 02 of the Camas Municipal Code ,
NOW , THEREFORE , be it ordained by the Council of the City of Camas as follows :
Section I
There is hereby added to the Camas Municipal Code a new Chapter regulating
stormwater control . The new Chapter shall be as set forth in Exhibit " A " attached hereto and by
this reference incorporated herein .
Section II
Camas Municipal Code Section 17 . 19 . 020 (A) ( 1 ) is hereby amended to provide as
follows :
Section 17 . 19 . 020 Improvements , supervision , inspections and
permits required .
A . Required Improvements .
1 . Every developer shall be required to grade and pave streets and alleys ,
install curbs and gutters , sidewalks , monuments , sanitary and storm
sewers , water mains , fire hydrants , street lights and street name signs ,
underground transmission lines , provide and install centralized mail
delivery boxes as determined by the U . S . Postal Service , together with all
appurtenances in accordance with specifications and standards in the
Ordinance Na ,���} � Page - 2
Camas Design Standard Manual , the six -year street plan , and other state
and local adopted standards and plans as may be applicable .
Section III
Camas Municipal Code Section 17 . 19 . 040 ( C ) ( 3 ) ( d ) is hereby amended to provide as
follows :
17 . 19 . 040 Infrastructure standards .
C . Utilities
3 . d . All stormwater generated by projects shall be treated , detained , and
disposed of in accordance with the applicable standards set forth in CMC
14 . 02 . Any deviations from the aforementioned standards shall be
submitted in writing to the director of public works for his review and
approval .
Section IV
This Ordinance shall take force and be in effect five ( 5 ) days from and after its publication
according to law .
fT
PASSED BY the Council and APPROVED by the Mayor this � day of February ,
2010 .
SIGNED-�-�
Mayor
ATTEST • / K. G
Clerk
AED as to fo
Po
it Attorne
EXHIBIT " A "
Chapter 14 . 02
STORMWATER CONTROL
14 . 02 . 010 Purpose
14 . 02 . 020 Definitions
14 . 02 . 030 Applicability
14 . 02 . 040 Exemptions
14 . 02 . 050 Adoption of Manuals
14 . 02 . 060 Cross References
14 . 02 . 070 Liability
14 . 02 . 100 Stormwater Site Plans
14 . 02 . 110 Runoff Treatment Plans
14 . 02 . 120 Source Control BMP Plans
14 . 02 . 130 Flow Control Facility Plans
14 . 02 . 140 Low Impact Development
14 . 029150 Wetlands Protection
14 . 02 . 200 Ownership and Maintenance
14 . 02 . 210 Bonds and Insurance
14 . 02 . 220 Deviations
14 . 02 . 300 Enforcement
Section 14 . 02 . 010 Purpose
It is the purpose of this chapter to adopt an ordinance , and other enforceable mechanisms ,
required for compliance with the most current version of the City of Camas ' National Pollutant
Discharge Elimination System (NPDES Ph . II Permit) Western Washington Phase II Municipal
Stormwater Pernut , and for compliance with the federal Underground Injection Control (UIC )
program , through application of best management practices (BMPs ) for stormwater management .
The regulatory basis requiring this ordinance is as follows :
1 . To meet requirements of the Federal Clean Water Act , the State of Washington
Department of Ecology has been given the authority to issue municipal stormwater
permits to designated communities throughout the state that discharge stormwater into
surface water bodies . On January 17 , 2007 , the Washington State Department of Ecology
issued the City of Camas a Western Washington Phase II Municipal Stormwater Permit
under the National Pollutant Discharge Elimination System (NPDES ) program . The
permit requires that the City of Camas adopt stormwater control and pollution prevention
measures for development and re - development , with the goal of improving waters of the
state .
2 . The Underground Injection Control (UIC ) program was created by Congress to protect
underground sources of drinking water from discharges of fluids to the ground . Chapter
173 - 218 WAC was adopted by the Washington State Department of Ecology to regulate
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, YISL IBIT " A "
stormwater discharges to groundwater through drywells and other types of underground
infiltration systems that are not regulated under the NPDES permit .
The ordinance is a means of preventing stormwater issues from causing harm to the health or
safety of the public , and to promote the public health , safety and general welfare by providing
standards in stormwater runoff in order to :
1 . Minimize surface and groundwater quality degradation and prevent erosion and
sedimentation of creeks , streams , ponds , lakes , wetlands , and other water bodies ;
2 . Minimize damage to property from increased runoff rates and volumes ;
3 . Protect the quality of waters for drinking water supply , contact recreation, fishing and
other beneficial uses ;
4 . Establish sound developmental policies which protect and preserve the City ' s water
resources ;
5 . Protect the roads and rights - of-- way from damage due to inadequately controlled runoff
and erosion ;
6 . Preserve and enhance the aesthetic quality of water resources ;
7 . Protect the health, safety and welfare of the inhabitants of the City ;
8 . Maintain existing groundwater levels , in- stream flows , and available water supply
volumes ; and
9 . Further the goals of no net negative impact in the quantity of runoff entering streams and
no net negative change in the quality of runoff entering streams through the
implementation of best management practices .
Section 14 . 02 . 020 Definitions
For the purposes of this chapter , the following definitions shall apply . Any terms not defined
herein are used as defined in the most current version of the City ' s National Pollutant Discharge
Elimination System Western Washington Phase II (NPDES Ph . II Permit) Municipal Stormwater
Permit and its mandatory incorporated provisions of the latest edition of the Stormwater
Management Manual for Western Washington ( SMMWW) .
Arterial — A road or street primarily for through traffic . A major arterial connects an Interstate
Highway to cities and counties . A minor arterial connects major arterials to collectors . A
collector connects an arterial to a neighborhood . A collector is not an arterial . A local access
road connects individual homes to a collector .
Best Management Practices (BMP ' s ) - The schedules of activities , prohibitions of practices ,
maintenance procedures , and structural and/or managerial practices approved by the Washington
State Department of Ecology that, when used singly or in combination, control , prevent or
reduce the release of pollutants and other adverse impacts to waters of Washington State .
Certified Erosion and Sediment Control Lead ( CESCL ) - An individual who has current
certification through a DOE approved erosion and sediment control training program (BMP
C 160 ) . A CESCL is knowledgeable in the principles and practices of erosion and sediment
control and must have the skills to assess site conditions and construction activities that could
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EXHIBIT " A "
impact the quality of stormwater and stormwater discharges .
City - The City of Camas .
Collection and Conveyance System - The drainage facilities , both natural and man-made ,
which collect , contain , and provide for the flow of surface and stormwater to a receiving water or
infiltration facility . The natural elements of the conveyance system include , but are not limited
to , small drainage courses , streams , rivers , lakes , and wetlands . The human -made elements of
the collection and conveyance system include , but are not limited to , gutters , inlets , ditches ,
pipes , channels , and retention/detention facilities .
Contributing Drainage Area - The subject property , together with the surrounding watershed ,
that contributes stormwater runoff to the subject property .
Department of Ecology (DOE or Ecology) — Is an environmental regulatory agency for the
State of Washington . The department administers laws and regulations pertaining to the areas of
water quality , water rights , and water resources , shoreline management , toxics clean-up , nuclear
waste , hazardous waste and air quality .
Design Standards Manual - The most current edition of the City of Camas Design Standards
Manual .
Development Site - The entire , legal bounds of a property on which a development activity is
proposed .
Director - The director of the City of Camas public works department or designee .
Drainage Area - The entire geographic surface area drained by a river and its tributaries ; the
surface area upstream of a point on a stream , where the water from rain , snowmelt, or irrigation
which is not absorbed into the ground flows over the ground surface , back into streams , to finally
reach that point ; an area characterized by all runoff being conveyed to the same outlet .
Drainage Pro j ect - The excavation or construction of pipes , culverts , channels , embankments or
other flow- altering structures in any stream , stormwater facility or wetland in the City of Camas .
Effective Impervious Surface - Those impervious surfaces that are connected via sheet flow or
discrete conveyance to a drainage system . Impervious surfaces on residential development sites
are considered non effective if the runoff is dispersed through a minimum of one hundred ( 100 )
feet of native vegetation in accordance with BMP TS . 3 0 " Full Dispersion " .
Flow Control Facility - A drainage facility designed to mitigate the impacts of increased surface
and stormwater runoff flow rates generated by development . Flow control facilities are designed
both to hold water for a considerable length of time and then release it by evaporation, plant
transpiration, and/or infiltration into the ground , and to hold runoff for a short period of time ,
releasing it to the conveyance system at a controlled rate .
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EXHIBIT " A "
Groundwater - Water in a saturated zone or stratum beneath the surface of land or below a
surface water body .
Highway — A main public road connecting towns and cities .
Impervious Surface - A hard surface area which either prevents or retards the entry of water
into the soil mantle as under natural conditions prior to development . A hard surface area which
causes water to run off the surface in greater quantities and/or at an increased rate of flow, from
the natural conditions prior to development . Examples include , but are not limited to , structures ,
rooftops , walkways , patios , driveways , carports , parking lots or storage areas , concrete or asphalt
paving , gravel roads , packed earthen materials , haul roads and soil surface areas compacted by
construction operations , and oiled or macadam surfaces .
Linear - Any street designated as collector or arterial in the latest adopted version of the map
within the Camas Comprehensive Plan entitled " City of Camas Transportation Comprehensive
Plan " .
Land - disturbing Activity - Any activity that results in a movement of earth or a change in the
existing soil cover (both vegetative and non- vegetative) and/or existing soil topography . Land-
disturbing activities include , but are not limited to , clearing , grading , filling and excavation .
Compaction that is associated with stabilization of structures and road construction shall also be
considered a land disturbing activity . Vegetation maintenance practices are not considered land-
disturbing activity .
• Land - disturbing activities of one ( 1 ) acre or greater will be required to apply for an
NPDES Construction Stormwater General Permit from Ecology .
Low Impact Development (LID ) - A stormwater management and land development strategy
applied at the parcel and subdivision scale that emphasizes conservation and use of on- site
natural features integrated with engineered , small - scale hydrologic controls to more closely
mimic pre - development hydrologic functions .
Maintenance or Maintain - Repair and maintenance includes activities conducted on currently
serviceable structures , facilities , and equipment that involves no expansion or use beyond that
previously existing and results in no significant adverse hydrologic impact . It includes those
usual activities taken to prevent a decline , lapse , or cessation in the use of structures and systems .
Those usual activities may include replacement of dysfunctional facilities , including cases where
environmental permits require replacing an existing structure with a different type structure , as
long as the functioning characteristics of the original structure are not changed .
Maximum Extent Practicable (MEP ) - refers to paragraph 402 (p ) ( 3 ) (B ) (111) of the Federal
Clean Water Act which reads as follows : Permits for discharges from municipal storm sewers
shall require controls to reduce the discharge of pollutants to the maximum extent practicable ,
including management practices , control techniques , and system , design , and engineering
methods , and other such provisions as the administrator or the State determines appropriate for
the control of such pollutants .
Page 4 of 14 Draft as of 01 - 25 - 10
EXHIBIT " Al
Minimum Requirements (MR) means the Minimum Technical Requirements for New
Development and Re � development as set forth in Appendix I of the most current version of the
City ' s Western Washington Phase 11 Municipal Stormwater Permit (NPDES Ph . 11) and adopted
manuals . The Minimum Requirements are identified as follows :
I Preparation of Stormwater Site Plans .
I Construction Stormwater Pollution Prevention Plan ( Construction SVvTPP ) .
3 . Source Control of Pollution .
4 . Preservation of Natural Drainage Systems and Outfalls .
5 . On� site Stormwater Management .
6 . Runoff Treatment .
7 . Flow Control .
8 . Wetlands Protection .
9 . Operation and Maintenance .
0
National Pollutant Discharge Elimination System (NPDES ) The national program for
0 0 101� 0 0 & 0 * 0 0 ts and
issuing , moctitying , revokinR , and reissuing ,, terminating , monitoring , and enforcin permi
%Www� � 9
0 0 0
imposing and enforcing pretreatment requirements , under sections 307 402 318 and 405 of the
Federal Clean Water Act , for the discharge of pollutants to surface waters of the state from point
sources . These permits are referred to as NPDES permits and in Washington State , are
administered by the Washington State Department of Ecology .
Native Vegetation Vegetation comprised of plant species other than noxious weeds that are
indigenous to the coastal region of the Pacific Northwest and which reasonably could have been
expected to naturally occur on the site .
0 0
NPDES Construction Stormwater General Permit The permit required , and issued by DOE ,
for any land � disturbing activity which disturbs one ( 1 ) acre or more and which may result in a
0
discharge of stormwater to surface waters of the state ; which includes storm drains ditches ,
wetland , creeks rivers lakes and marine waters .
NPDES Ph . 11 Municipal Stormwater Permit (NPDES Ph . 11) The City ' s most current
version of the National Pollutant Discharge Elimination System Western Washington Phase 11
Municipal Stormwater Permit .
Natural Location The location and elevation of those channels swales , and other non man.
made conveyance systems as defined by the first documented topographic contours existing for
the development site , either from maps or photographs .
0 0
New Development Land disturbing activities including Class IV � general forest practices that
are conversions from timber land to other uses ;I structural development , including construction or
0 0 9 0 0 0
installation of a building or other structure ; creation of impervious surfaces ; and subdivision,
0 a 0 0
0
short subdivision and binding site plans , as defined and applied in Chapter 58 . 17 RCW . Proi ects
0 0
meeting the definition of re � development shall not be considered new development .
Lan& disturbing activities of one ( 1 ) acre or greater will be required to apply for an
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EXHIBIT " Al
NPDES Construction Stormwater General Permit from Ecology .
Non - endangerment Standard — A means to prevent the movement of fluid containing any
contaminant into the groundwater if the contaminant may cause a violation of the water quality
standards for groundwater of the state of Washington, Chapter 173 - 200 WAC or may cause
health concerns .
Operations and Maintenance ( O & M) Manual - The document prepared to explain the proper
specific operational and maintenance details of facilities installed as required by the Stormwater
Manual .
Peak Discharge - The maximum stormwater runoff rate in cubic feet per second determined for
the design storm .
Pollution or Pollutants — Such contamination , or other alteration of the physical , chemical or
biological properties , of any waters of the state , including change in temperature , taste , color,
turbidity, or odor of the waters , or such discharge of any liquid , gaseous , solid , radioactive , or
other substance into any waters of the state as will or is likely to create a nuisance or render such
waters harmful , detrimental or injurious to the public health, safety or welfare , or to domestic ,
commercial , industrial , agricultural , recreational , or other legitimate beneficial uses , or to
livestock, wild animals , birds , fish or other aquatic life .
Pollution - Generating Impervious Surfaces (PCIS ) - Impervious surfaces considered to be
significant sources of pollutants in stormwater runoff. Such surfaces include those that are
subject to vehicular use , industrial activities , or storage of erodible or leachable materials that
receive direct rainfall or run- on or blow- in of rainfall . Metal roofs are considered to be PCIS
unless coated with an inert , non- leachable material . Roofs that are subject to venting of indoor
pollutants from manufacturing , commercial or other operations or processes are also considered
PGIS .
A surface , whether paved or not , shall be considered PGIS if it is regularly used by motor
vehicles . The following are considered regularly- used surfaces : roads , unvegetated road
shoulders , bike lanes within the traveled lane of a roadway , driveways , parking lots , unfenced
fire lanes , vehicular equipment storage yards , and airport runways .
The following are not considered regularly - used surfaces : paved bicycle pathways separated
from and not subjected to drainage from roads for motor vehicles , fenced fire lanes , and
infrequently used maintenance access roads .
Pollution - Generating Pervious Surfaces (PGPS ) - Any non- impervious surface subject to use
of pesticides and fertilizers or loss of soil . Typical PGPS include lawns , landscaped areas , golf
courses , parks , cemeteries , and sports fields .
Pre- developed Condition - The native vegetation and soils that existed at a site prior to the
influence of Euro - American settlement . The pre - developed condition shall be assumed to be a
forested land cover unless reasonable , historic information is provided that indicates the site was
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EXHIBIT " A "
prairie prior to settlement .
Pro j ect Site - That portion of a property , properties , or right of way subject to land disturbing
activities , new impervious surfaces , or replaced impervious surfaces .
Receiving Waters - Bodies of water or surface water systems to which surface runoff is
discharged via a point source of stormwater or via sheet flow .
Redevelopment - A site that is already substantially developed ( i . e . , has 35 % or more of existing
impervious surface coverage) , the creation or addition of impervious surfaces ; the expansion of a
building footprint or addition or replacement of a structure ; structural development including
construction, installation or expansion of a building or other structure ; replacement of
impervious surface that is not part of a routine maintenance activity ; and land- disturbing
activities .
• Land - disturbing activities of one ( 1 ) acre or greater will be required to apply for an
NPDES Construction Stormwater General Permit from Ecology .
Regional Stormwater Facility - A facility designed to treat and control stormwater runoff from
a contributing drainage area .
Replaced Impervious Surfaces - For structures , the removal and replacement of any exterior
impervious surfaces or foundation ; or, for other impervious surfaces , the removal down to bare
soil , or base course , and replacement .
Roof Downspout Systems - A disposal system that collects stormwater runoff from roofs into an
approved stormwater collection system .
Runoff - Water that travels across the land surface and discharges to water bodies either directly
or through a collection and conveyance system .
Site - The area defined by the legal boundaries of a parcel or parcels of land that is ( are ) subject
to new development or re - development . For road prof ects , the length of the project site and the
right- of-- way boundaries define the site .
Source Control BMP - A structure or operation that is intended to prevent pollutants from
coming into contact with stormwater through physical separation of areas or careful management
of activities that are sources of pollutants . The 2005 Stormwater Management Manual
( SMMWW) , Volume IV , separates source control BMPs into two types .
• Structural Source Control BMPs are physical , structural , or mechanical devices , or
facilities that are intended to prevent pollutants from entering stormwater .
• Operational BMPs are non- structural practices that prevent or reduce pollutants from
entering stormwater .
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EXHIBIT " A "
Stormwater - Runoff during and following precipitation and snowmelt events , including surface
runoff and drainage .
Stormwater Facility - A constructed component of a stormwater drainage system designed and
constructed to perform a particular function, or multiple functions . Stormwater facilities include ,
but are not limited to : pipes , swales , ditches , open channels , culverts , street gutters , detention
ponds , retention ponds , constructed wetlands , storage basins , infiltration devices , catch basins ,
manholes , dry wells , oil/water separators , biofiltration swales , and sediment basins .
Stormwater Manual ( SMMNVVV) - The 2005 Stormwater Management Manual for Western
Washington, which is the 5 - volume technical manual (Publication Nos . 05 - 10 - 29 through 05 - 10 -
33 ) prepared by the Washington State Department of Ecology for use by local governments that
contains BMPs to prevent, control , or treat pollution in stormwater .
Stormwater Site Plan - The comprehensive report containing all of the technical information
and analysis necessary for regulatory agencies to evaluate a proposed new development or re -
development prof ect for compliance with stormwater requirements .
Contents of the Stormwater Site Plan will vary with the type and size of the project , and
individual site characteristics . It includes :
A Construction Stormwater Pollution Prevention Plan ( Construction SWPPP ) that must
be submitted to and approved by the Washington Department of Ecology ;
A Permanent Stormwater Control Plan (PSC Plan) .
Guidance on preparing a Stormwater Site Plan is contained in the Stormwater Manual , Chapter 3
of Volume I . Modified submittals of stormwater site plans are permitted as specified in the
Technical Requirements .
Stream - Those areas of year- round base flow or where surface waters produce a defined
channel or bed at least two - feet in width between ordinary high water marks . For the purposes of
this chapter , streams shall include both natural channels and man- made channels which were
constructed to replace a natural stream .
Total Maximum Daily Load (TMDL) - A water cleanup plan . A TMDL is a calculation of the
maximum amount of a pollutant that a water body can receive and still meet water quality
standards , and an allocation of that amount to the pollutant ' s sources . A TMDL is the sum of the
allowable loads of a single pollutant from all contributing point and nonpoint sources . The
calculation must include a margin of safety to ensure that the water body can be used for the
purposes the state has designated . The calculation must also account for seasonable variation in
water quality . Water quality standards are set by states , territories , and tribes . They identify the
uses for each water body , for example , drinking water supply , contact recreation ( swimming) ,
and aquatic life support ( fishing) , and the scientific criteria to support that use . The Clean Water
Act, section 303 , establishes the water quality standards and TMDL programs .
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{
EXHIBIT " A "
Threshold Discharge Area - An onsite area draining to a single natural discharge location or
multiple natural discharge locations that combine within one - quarter mile downstream ( as
determined by the shortest flow path) .
Treatment BMP - A BMP that is intended to remove pollutants from stormwater . A few
examples of treatment BMPs include , but are not limited to , wetponds , oil/water separators ,
biofiltration swales , and constructed wetlands .
Underground Injection Control (UIC ) - A manmade subsurface fluid distribution system
designed to discharge fluids into the ground , consisting of an assemblage of perforated pipes ,
drain tiles , or other similar mechanisms , or a dug hole that is deeper than the largest surface
dimension . Subsurface infiltration systems include drywells , pipe or french drains , drain fields ,
and other similar devices .
Waters of the State - Includes storm drains , ditches , wetlands , creeks , rivers , lakes , marine
waters , and all other surface waters and water courses within the jurisdiction of the State of
Washington .
Wetland - Those areas defined as wetlands under the City of Camas Critical Areas Protection
ordinance , CMC 18 . 03 . 050 .
WSDOT HR Manual - The Washington State Department of Transportation ' s Highway Runoff
Manual (WSDOT HR Manual) contains BMPs to prevent, control , or treat pollution in
stormwater and reduce other stormwater related impacts to waters of the state . The WSDOT HR
Manual is intended to provide guidance on measures necessary to control the quantity and
quality of stormwater runoff from road projects .
Section 14 . 02 . 030 Applicability
Provisions of this chapter shall apply to new development and re - development activities , as
defined herein and as regulated by the most current version of the City ' s National Pollutant
Discharge Elimination System Western Washington Phase II Municipal Stormwater Permit
(NPDES Ph . II Permit) and the latest edition of the Stormwater Management Manual for Western
Washington ( SMMWW) , as amended by this Ordinance and the City ' s Design Standards
Manual .
All new development and re - development project activities shall comply with this chapter ; and
its mandatory incorporated provisions of the following documents :
• Latest edition of the Stormwater Management Manual for Western Washington
( SMMWW) ; and the
• Latest edition of the City ' s Design Standards Manual .
All new linear project activities shall comply with this chapter ; and its mandatory incorporated
provisions of the following documents .
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EXHIBIT " A "
• Latest edition of the Washington State Department of Transportation ` Highway Runoff
Manual ' ; and the
• Latest edition of the City ' s Design Standards Manual .
Provided that deviations to the Minimum Requirements (MR) may be granted under criteria and
procedures set forth in Section 14 . 02 . 220 which shall control all deviations , adjustments , and
variances requested under this Chapter .
Section 14 . 02 .040 Exemptions
A . Exemptions from the provisions of this chapter, as listed in Appendix 1 , Section 1 of the
most current version of the City ' s National Pollutant Discharge Elimination System Western
Washington Phase II Municipal Stormwater Permit (NPDES Ph . II Permit) , shall be granted
for the following activities :
1 . Forest practices regulated under Title 222 WAC , except Class IV General Forest
Practices that are conversions from timber land to other uses .
2 . Commercial agriculture practices involving working the land for production . However,
the conversion from timber land to agriculture and construction of new impervious
surfaces are not exempt .
3 . Oil and gas field activities or operations ; such as construction of drilling sites , waste
management pits , access roads , transportation and treatment infrastructure for natural gas
treatment plants and compressor stations , and crude oil pumping stations . However ,
operators are encouraged to implement and maintain BMP ' s to minimize erosion and
control sediment during and after construction activities to help ensure protection of
surface water quality during storm events .
4 . The following road maintenance practices are exempt : pothole and cut patching ,
overlaying existing asphalt or concrete pavement with asphalt or concrete ( so long as the
area of coverage is not expanded) , shoulder grading , reshaping/regrading drainage
systems (roadside ditches ) , crack sealing , resurfacing with in-kind material (without
expanding the area of coverage ) , and vegetation maintenance .
5 . Underground utility projects that replace the ground surface with in-kind material or
materials with similar runoff characteristics are subject only to Minimum Requirement
#2 , Appendix 1 , of the DOE Permit (preventing erosion and discharge of sediment into
receiving waters) .
6 . Emergency fire response activities ; such as house fires , forest fires , brush fires , and car
fires . However , responsible parties are encouraged to implement and maintain BMP ' s ,
after the fact, to help ensure protection of surface water quality during storm events .
Controlled burns , for purposes of training individuals , are not exempt .
Specific exemptions , as provided by the SMMWW , as modified by the City ' s Design Standards
Manual , as amended .
Section 14 . 02 . 050 Adoption of Manuals
The latest edition of the SMMWW as modified by the City ' s Design Standards Manual is
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E rHIB I T " A "
adopted by reference , and the recommendations and requirements contained therein will be the
minimum standards for this chapter except as modified in this chapter .
To supplement the minimum standards set forth above to regulate activities subject to this
chapter , and to provide technical guidance , the City hereby adopts by reference the most current
version of the following manuals :
For Development and Re - development Projects :
1 . Latest edition of the Department of Ecology ' s Stormwater Management Manual for
Western Washington ( SMMWW) .
2 . Latest edition of the City of Camas Design Standards Manual .
• The Design Standards Manual is intended to supplement and clarify the SMMWW to
provide guidance for, and tailor to , local conditions . The Design Standards Manual
may also adopt measures that are deemed equivalent by the Washington State
Department of Ecology .
3 . Latest edition of the City ' s Storm Sewer Systems Operation & Maintenance Manual .
For Linear Projects :
1 . Latest edition of the Washington State Department of Transportation ` Highway Runoff
Manual ' .
2 . Latest edition of the City of Camas Design Standards Manual . ,
3 . Latest edition of the City ' s Storm Sewer Systems Operation & Maintenance Manual .
At least one copy of each manual , adopted in this section , shall be filed in the Office of the
Finance Director for use and examination by the public . The manuals may also be made
available for use and examination by the public at the Public Works Department , the Camas
Public Library , or on the City website .
Section 14 . 02 . 060 Cross References
Any reference to " Stormwater Management Manual " or " Washington Department of Ecology ' s
Stormwater Management Manual for Western Washington " or " BMP ' s approved by the Western
Washington Stormwater Manual " ; wherever found within the Camas Municipal Code ( CMC ) ,
shall refer to this chapter and to the equivalent manuals as adopted in this chapter .
Section 14 . 02 . 070 Liability
Nothing in this chapter shall be deemed to impose any liability upon the City of Camas or upon
any of its officers or employees , or to relieve the owner or occupant of any property from the
duty to keep their property in a safe and healthy condition .
Section 14 . 02 . 100 Stormwater Site Plans
Stormwater site plans shall comply with the requirements of this chapter , and the adopted
Manuals as referenced in Section 14 . 02 . 050 . Plans shall be submitted to the City for all activities
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EXHIBIT
subject to regulation under this chapter .
Section 14 . 02 . 110 Runoff Treatment Plans
Runoff treatment plans shall comply with the requirements of this chapter, and the adopted
Manuals as referenced in Section 14 . 02 . 050 . Plans shall be submitted to the City for all activities
subject to regulation under this chapter .
Section 14 . 02 . 120 Source Control BMP Plans
Source control BMP plans shall comply with the requirements of this chapter, and the adopted
Manuals as referenced in Section 14 . 02 . 050 . Plans shall be submitted to the City for all activities
subject to regulation under this chapter .
Section 14 . 02 . 130 Flow Control Facility Plans
Flow control facilities , in new development and re- development , shall follow the requirements of
Appendix 1 of the City ' s NPDES Ph . II Permit , except as modified by the City ' s Design
Standards Manual .
A . UIC wells used to manage stormwater for flow control shall meet the non - endangerment
standard ( Chapter 173 - 218WAC ) ; which means the UIC well shall be designed , constructed ,
operated , maintained , and decommissioned in a manner that protects groundwater quality
( Chapter 173 - 200WAC ) .
B . Hydrologic and hydraulic analysis shall be in accordance with the Stormwater Management
Manual ( SMMWW) and the City ' s Design Standards Manual .
C . Every new development and re - development must demonstrate that sufficient downstream
conveyance capacity exists to accommodate flows from the project . Hydrologic and
hydraulic analysis will be required when sufficient capacity has not been established , as
described in the City ' s Design Standards Manual .
Section 14 . 02 . 140 Low Impact Development
As it relates to stormwater compliance regulations , itis acceptable for new development and re -
development projects to propose the use of low impact development practices .
A . For purposes of providing technical guidance concerning Low Impact Development ( LID )
practices , on those activities subject to this chapter , the City hereby approves the use of the
most current edition of the following manuals :
1 . Low Impact Development Technical Guidance Manual for Puget Sound
2 . Stormwater Management Manual ( SMMWW)
3 . City ' s Design Standards Manual
B . All uses of LID practices shall meet applicable regulations and requirements .
Page 12 of 14 Draft as of 01 - 2540
EXHIBIT " A "
Section 14 . 02 . 150 Wetlands Protection
A . Wetlands Protection required under Minimum Requirement (MR) # 8 may also be addressed
in Camas Municipal Code ( CMC ) Chapter 16 . 51 and Chapter 16 . 53 .
B . Where provisions of ( CMC ) Chapter 14 . 02 , or manuals adopted under Chapter 14 . 02 ,
conflict with CMC Chapter 16 . 51 and Chapter 16 . 53 , the more stringent requirements , which
have the most protective effect on water quality and wetland function , shall apply .
Section 14 . 02 . 200 Ownership and Maintenance
A . Ownership and Maintenance Responsibility
Stormwater systems and facilities which collect , convey , treat , and/or infiltrate stormwater
idential developments and non - residential developments ; such as
runoff, including res
commercial , industrial , and school sites ; are ultimately the responsibilities of the applicant to
operate and maintain . Ownership for stormwater facilities shall be specified on the recorded
plat , if applicable .
1 . Stormwater facilities , located within residential subdivisions and short plats , shall be the
maintenance responsibility of the applicant for two years after date of final acceptance . This
maintenance period shall run concurrent with the City ' s required 2 - year warranty period that
begins at Final Acceptance (ref CMC 17 . 21 . 040 ( B ) Paragraph 2 ) . Prior to end of the two -
year warranty period , the applicant shall ensure that a fully functional facility is turned over
to the new owners ( e . g . Homeowners Associations ) .
2 . At completion of the two - year warranty period , stormwater facilities located within a
residential development shall be the maintenance responsibility of the Homeowners
Associations (HOA) unless determined otherwise by the director .
B . Maintenance Standards
Stormwater facilities , both private and public , shall be inspected and maintained so that they
operate as designed . Inspection and maintenance shall be in accordance with the " Maintenance
Standards for Drainage Facilities " as outlined in the Stormwater Management Manual
( SMMWW) Volume V - Runoff Treatment BMPs and the City ' s Storm Sewer Systems Operation
& Maintenance ( O & M) Manual standards .
C . Stormwater Facilities Inspections
rity to inspect all stormwater facilities for compliance with this
The City shall have the autho
Chapter . If the stormwater facility is not being maintained, as intended, the City shall take
enforcement action as specified in 14 . 02 . 300 to bring the facility into compliance . If required
actions are not performed in a timely manner and/or if immediate action is necessary to protect
public health , safety , or public resources , the City may perform this maintenance and bill the
responsible party (les ) for the costs of such maintenance .
Section 14 . 02 . 210 Bonds and Insurance
Page 13 of 14 Draft as of 01 - 25 - 10
EXHIBIT "A "
To insure satisfactory operation of new stormwater facilities , the applicant constructing the
facility shall maintain the facility for two years after final acceptance of the project . The
requirements of this Section are in addition to any bonding or insurance otherwise required .
A . After final acceptance of stormwater facilities , the applicant shall post and maintain a two -
year maintenance bond or other security acceptable to the director . The two -year
maintenance bond will cover the cost of design defects , failures in workmanship , and failure
to maintain the facilities . The amount of the maintenance bond shall be twenty percent
(20 % ) of the construction cost, including landscape requirements , of the stormwater
facilities .
B . Bonding and insurance requirements of Section 14 . 02 . 210 . A shall be waived for
development activities and drainage projects undertaken by governmental agencies .
Section 14 . 02 . 220 Deviations
The approval authority may authorize deviations from the minimum requirements of this chapter
pursuant to a Type II decision or as part of a consolidated review process as specified in CMC
18 . 55 . Any decision to approve a deviation shall include affirmative findings addressing the
following :
A . The deviation provides for the use of Low Impact Development practices for stormwater
management pursuant to Section 14 . 02 . 140 of this Chapter ; or
B . The deviation shall be limited to the " Minimum Requirements " found in Appendix 1 ,
Minimum Requirement (MR) number( s ) 1 , 4 , 5 , 6 , 7 , 9 , and of the City ' s Design Standards
Manual and shall provide equivalent environmental protection .
I . The deviation shall be based on sound engineering practices , with the objectives of
safety , functionenvi
, ronmental protection, and facility maintenance considered .
2 . The deviation requested does not necessitate the need for additional deviations ,
exceptions , or variances from the Camas Municipal Code .
Any authorization for deviation may prescribe conditions deemed necessary or desirable for the
public interest .
Section 14 . 02 . 300 Enforcement
Any violation of any provision or failure to comply with any of the requirements of this Chapter ,
or a violation of or failure to comply with any of the terms and conditions of any approval issued
under the provisions of this Chapter shall be subject to the Enforcement provisions of CMC
Sections 18 . 5 5 . 400 through 18 . 5 5 . 460 .
Page 14 of 14 Draft as of 01 -2540
t
•h
Public Works Department
File : # SS444A
Stormwater Control Code
Staff Report Date : January 26 , 2010
To : Paul Dennis , Mayor
City Council
From : Staff
Hearing Date : February 1 , 2010
Public Notice : Published in the Post Record on January 26 , 2010 . Legal publication # 349952
Posted at the Camas Post Office , City Hall , Camas Library, & City of Camas web site at :
http : //www . ci . camas . wa . us/govern/publicnotice . htm
Workshops : January 13 , 2009 Planning Commission ; April 6 , 2009 Council ; May 18 , 2009
Council ; June 1 , 2009 Council ; August 3 , 2009 Council ; January 4 , 2010 Council ,
January 19 , 2010 Council
Public Hearings : January 20 , 2010 Planning Commission
Annual Planning Conference : January 22 , 2010 Council ( discussion of . detention facility
maintenance .
Background :
The Washington State Department of Ecology (DOE ) , in accordance with the Federal Clean
Water Act , has been given the authority to issue municipal stormwater permits to cities that
discharge stormwater into surface water bodies . On January 17 , 2007 , DOE issued the City of
Camas a Municipal Stormwater Permit under the National Pollutant Discharge Elimination
System (NPDES ) Program . This permit requires the City of Camas to adopt and implement
stormwater control and pollution prevention measures for development and redevelopment by
February 16th , 2010 . The measures within the ordinance to be adopted are to meet the
requirements set forth in the DOE stormwater permit .
This proposed code is intended to be , as stated in the " Purpose" section of the draft of this
ordinance , " a means of preventing stormwater issues from causing harm to the health or safety of
the public , and to promote the public health , safety and general welfare by providing standards in
stormwater runoff. . . "
One of the proposed revisions to the Camas Municipal Code is the adoption of a DOE - approved
stormwater management manual for new construction , development , and re - development
projects . The proposed code changes eliminate references in CMC 17 . 19 to the Puget Sound
Stormwater Manual , which is no longer sanctioned or recognized by DOE . The Stormwater
Management Manual for Western Washington and the WSDOT ' s Highway Runoff Manual are
cited in the proposed chapter 14 . 02 .
In July 2009 Council directed staff to organize a committee consisting of City staff members ,
Council members , and professionals from the Camas community and the local development
community .
Committee Members :
Linda Dietzman , Councilmember Don Chaney, Councilmember
Al Schauer, private consultant Eric Golemo , private consultant
Tim Kraft , private consultant Randy Printz , development attorney
Casey Odell , industrial professional Jennifer McClure , private consultant
Shawn McPherson , assistant City attorney Anita Ashton , City staff member
Phil Bourquin , City staff member Monte Brachmann , City staff member
James Carothers , City staff member Eric Levison , City staff member
This committee met 5 times from October through December . Vancouver ' s ordinance was used
as a starting point and changes were made to tailor the proposed code for the City of Camas . The
focus in drafting this ordinance was to provide legal flexibility for development options while
protecting the environment .
The committee discussed in detail mechanisms and verbiage to make the ordinance
"understandable" and compatible with other documents and current City Code . The draft
ordinance references the " Camas Design Standards Manual " in many places . It is the intent of
staff to have modifications to this manual prepared within 90 days of ordinance adoption . These
modifications will focus on supplementing and clarifying the SMMWW , tailoring and providing
guidance for local conditions , and may include measures that are deemed equivalent to the
SMMWW by DOE . For example , large water bodies , such as the Columbia River, are exempt
from stormwater detention under the SMMWW . Lacamas Lake is not listed as a stormwater
detention - exempted body in this DOE manual ; however, Clark County conducted a study that
solidifies their stance that Lacamas Lake can be exempted from quantity control ( detention) .
Public testimony was received in the Planning Commission hearing on January 20 , 2010 . The
following suggestions and requests were made by representatives of the Building Industry
Association of Clark County :
• Provide timely implementation of related updates to the Camas Design Standards Manual
• Exempt certain water bodies ( e . g . Lacamas Lake) from flow/quantity control ( detention)
requirements
Stormwater Control Code
Staff Report for Council Hearing Page 2
• Adopt a policy similar to Clark County for flow control measures in new developments
above the pre - development rate . One of the suggested methodologies included
incorporating flow control into parks and playfields in a manner that flooding may only
occur " every 50 years or so . " Emphasis was placed on having the City put in place
strategies to alleviate the need for developers to use the majority of the area of their
property for stormwater facilities .
• Implement standards to allow infiltration .
Planning Commissioner Hooper voiced concern about the responsibility of the homeowners '
associations (HOA ' s ) for the maintenance and repairs of stormwater facilities . She noted that
HOA ' s are neglecting to maintain their facilities . Planning Commission voted to recommend
adoption of the stormwater control code with typographical revisions that are implemented into
the attached proposed code language .
Summary :
Staff is proposing the following schedule in order to meet the City ' s NPDES permit timeline for
adoption and implementation of a stormwater control ordinance :
• City Council Ordinance Adoption — February 1 , 2010 .
• Complete Draft Design Standards Manual — April 30 , 2010
• Council Review and adoption of manual — April meetings .
Staff recommends that Council accept public comment , deliberate on the record , and vote on the
ordinance .
RApr0jects\ss444A . . . \Stormwater\Counc11StaffRep_O 1 -26 - 10 . doc
Stormwater Control Code
Staff Report for Council Hearing Page 3