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2019 – 2024 Ecology WW Phase II Municipal Stormwater Permit

Summary: External link to Ecology Phase II permit site

We develop and administer Clean Water Act National Pollutant Discharge Elimination System (NPDES) municipal stormwater permits in Washington. The Western Washington Phase II permit requires local governments to manage and control stormwater runoff so that it does not pollute downstream waters.
The current permit is effective Aug. 1, 2024, and expires on July 31, 2029.
Overview of permit timelines
View
permit timelines
for continuing permittees. These timelines provide an overview of major deadlines for implementing permit requirements.
Annual reports for the calendar year are due by
March 31 the following year.
Municipal stormwater permit guidance
For guidance about applying, changing, or implementing and complying with your municipal stormwater permit see
municipal stormwater guidance
Stormwater manuals
provide stormwater permit implementation and management guidance. For more general stormwater permit guidance, see the
stormwater guidance
page.
Frequently asked questions
Have a question? Check out our
frequently asked questions page
Permit history
Keep in touch with us
Join our
municipal stormwater permit email list
to receive updates about this permit.

Seattle 50-year plan for Drainage and Wastewater

Summary: Seattle Public Utilities 50 year plan for drainage and wastewater systems, SPU Drainage and wastewater services, protect Seattle's waterways, get involved in Seattle's waterways

Water flows through our homes and streets to our creeks, lakes, and the ocean, influencing how Seattle looks, feels, and functions along the way. Seattle Public Utilities invites you to plan Seattle’s water future with us: you can help guide the next 50 years of our drainage and wastewater system investments to benefit our communities and shape our water.
Portrait photos by
Chloe Collyer

Report on a Conversation with NPDES Coordinators: Action Needed to Address Climate Impacts

Summary: Conversation with PNDES Coordinators on actions to address climate impacts, climate resilience considerations,

What’s Needed
Report on a Conversation with NPDES Coordinators:
Actions needed to address Climate Impacts
A Conversation Last June ‘19
• Climate is changing
• How do we adapt?
• Regional Stormwater professionals work well together
• What are the needs?
The Obvious
• Climate Scenarios
• Thanks Guillaume!
• Modeling and Sizing of SW
Facilities
• Thanks Jeff & Ecology!
• Refinements & Validations
• Jeff’s “crowd sourcing” request
Other Considerations
• O & M considerations
• More intense storm = More
maintenance?
• Finances
• How much?
• Grant programs?
• Managing Risk
• Act now may = less $
• Act later may = more $
• Or…
More to Consider
• Communication
• To residents, businesses, electeds,
each other
• Can we learn from others
• Who started doing what? Lessons
learned?
• Population Increase
• 2050 increases
• “Climate Refugees”
We are Early in Stages
How do we continue push this forward?
Opening to Floor:
What’s missing? How do we
move forward?
Collect ideas here

King County Proposed Updates for 2026 Stormwater Pollution Prevention Manual

Proposed Updates for 2026 Stormwater Pollution Prevention Manual & Other Goodies King County – Stormwater Services Section 2/17/26 Required Revisions for ECY Equivalency • PCB updates ECY’s Stormwater Management Manual for Western Washington (SWMMWW) King County’s Stormwater Pollution Prevention Manual (SPPM) S424 BMPs for Roof/Building Drains at Manufacturing and Commercial Buildings A-15, A-28 and A-29 (see below for titles) S431 BMPs for Washing and Steam Cleaning Vehicles/Equipment/Building Structures A-15: Washing of Buildings, Rooftops, and Other Large Surfaces S438 BMPs for Construction Demolition A-28: Demolition of Buildings S451 BMPs for Building, Repair, Remodeling, Painting, and Construction – edits for PCBs A-29: Building Repair, Remodeling, and Construction Required Revisions for ECY Equivalency • Light rail additions ECY’s Stormwater Management Manual for Western Washington (SWMMWW) King County’s Stormwater Pollution Prevention Manual (SPPM) S453 BMPs for Washing Light Rail Elevated Guideways A-54: Washing of Light Rail Vehicles and Elevated Guideways S454 BMPs for Washing Light Rail Vehicles A-54: Washing of Light Rail Vehicles and Elevated Guideways New and/or Revised BMP Activity Sheets Brief Description of the Change BMP Activity Sheet BMP prohibiting the repair and maintenance of vehicles and equipment on municipal roads A-18: Vehicle and Equipment Repair and Maintenance BMP requiring the draining of fluids from nonoperational vehicles and equipment if stored outside A-31: Parking Lots, Driveways, and Outside Storage Areas Include language to enforce qualitative buffers to prevent runoff from entering surface waters and adjacent properties A-35: Keeping Livestock in Stables, Pens, Pastures or Fields New BMP activity sheet A-50: Emergency Responders New BMP activity sheet A-51: Mobile Businesses and Vendors New BMP activity sheet A-52: Mobile Food Businesses and Vendors New BMP activity sheet A-53: Stone Cutting New BMP activity sheet A-55: Road and Roadside Ditch Maintenance New BMP activity sheet A-56: Hazardous Materials Use, Storage and Disposal New BMP activity sheet A-57: Underground Injection Control (UIC) New BMP activity sheet R-10: Residential Livestock Management – Keeping Livestock in Stables, Pens, Pastures or Fields New BMP activity sheet R-11: Residential Clearing and Grading of Land Double click for draft BMP activity sheets A-15 A-18 A-28 A-29 A-31 A-35 A-50 A-51 A-52 A-53 A-54 A-55 A-56 A-57 A-58 R-10 R-11 New Outreach Material • Introductory rack “business” card • Storm Drain Maintenance • Fats, Oils and Grease • PCB Requirements for Construction and Surface Cleaning Trades • Spill Prevention and Cleanup Plan Intro Rack Card (blank) Storm Drains (blank) FOG (blank) PCB quirements (bla Spill Plan (blank) Outreach Material Use • Translations are in progress for some BMPs (e.g., Spill plan) • Amharic • Chinese (simple) • Korean • Russian • Somali • Spanish • Vietnamese • Materials will be available for use, but PPA logo/info must remain on the product (ECY funded) Bob Bernhard [email protected] 206-263-8979 Stormwater Pollution Prevention (Source Control) and Compliance Program – Manager King County – Dept. of Natural Resources and Parks, Water and Land Resources Division, Stormwater Services Section

WW Phase II 2024-2029 Timeline of deliverable due dates

Summary: 2024 – 2029 Permit, Compliance Timelines, Year by year compliance guideline, deadlines, compliance by permit condition

Western Washington Phase II Municipal Stormwater Permit Overview – 2024 to 2029
The timeline below provides an overview of major program deadlines for implementing permit requirements of S5 Stormwater Management Program
(SWMP) and S8 Monitoring and Assessment for Continuing City, Town, and County Permittees (By Date means “no later than…”). This is guidance only.
Table paraphrases requirements and does not include all ongoing program elements. Please see the permit for additional details and related
requirements.
S5 Permit
Components
Ongoing
Program
Implementation
2024
2025
2026
2027
2028
2029
A. Stormwater
Management
Plan
Annually update
& submit the
SWMP with
Annual Report
(S9)
– A.3.a. Cost
tracking: track
the cost of
development and
implementation
of each
component of
the SWMP
– A.3.b. activity
tracking: track #
of inspections,
follow up
actions, official
enforcement,
public ed
activities
By March 31
(ongoing from
this year
forward):
Submit the
(estimated) cost
of development
and
implementation
of each
component of
the SWMP and
sources of
funding.
S5 Permit
Components
Ongoing
Program
Implementation
2024
2025
2026
2027
2028
2029
A.5
Coordination
Ongoing
coordination
By March 31:
Submit
description of
internal
coordination
mechanisms
among
departments.
C.1
Stormwater
Planning
Ongoing
-Continue to
convene
interdisciplinary
team
-Assess and
report LID code-
related
requirements.
March 31:
Respond to
series of Annual
Report (AR)
questions for
coordination of
long-range plans
during this
permit term
Submit
completed
SMAP for new
catchment area,
or additional
actions for
existing SMAP.
By Dec 31:
Adopt and
implement tree
canopy
goals/policies to
support
stormwater
management.
S5 Permit
Components
Ongoing
Program
Implementation
2024
2025
2026
2027
2028
2029
C2. Public
Education &
Outreach
Ongoing:
Implementation
of ed & o
outreach
programs and
stewardship
By July 1:
Follow Social
Marketing
methodology to
develop strategy
and schedule
for new or
modified
campaign.
By Sept 1:
Begin to
implement
strategy
By March 31:
Submit report
on evaluation of
behavior change
campaign.
C3. Public
Participation
Ongoing:
-Create
opportunities for
public, including
overburdened
communities,
and specifically,
highly impacted
communities, to
participate in
SWMP and SMAP.
-Post SWMP and
Annual Report to
website by May
31.
By Dec 31:
Document
methods used
to identify
overburdened
communities
S5 Permit
Components
Ongoing
Program
Implementation
2024
2025
2026
2027
2028
2029
C4. Mapping &
Documentation
Ongoing
Maintain
mapping data
By March 31:
Submit
locations of all
known outfalls
according to
standardized
template in
annual report.
By Dec 31:
Use available,
existing data to
map tree
canopy to
support
stormwater
management on
Permittee-
owned or
operated
properties.
By March 31:
Map and assess
acreage of MS4
tributary basins
to outfalls or
discharge pts
with publicly
owned SW
Treatment or FC
BMPs/facilities.
Submit with the
Annual Report a
map(s) (.pdf)
and table (.xlsx)
with a
breakdown of
the MS4
tributary basins
(see permit for
details).
By Dec 31:
Map
overburdened
communities in
relation to
stormwater
treatment and
flow control
BMPs/facilities,
outfalls,
discharge
points, and tree
canopy on
Permittee-
owned/operated
properties.
S5 Permit
Components
Ongoing
Program
Implementation
2024
2025
2026
2027
2028
2029
C5. IDDE
Ongoing
– Implement
program to
prohibit, address,
and eliminate
illicit discharges.
– Train staff
– Field screen on
average 12% of
the MS4 each
year.
-Track and
maintain records
through WQ
WebIDDE or
submit .xml
following the App
12 schema.
By Dec 31:
Coordinate with
firefighting
agencies to be
notified when
PFAS-containing
AFFFs are used
during
emergency
firefighting
activities.
By Jan 1:
Update and
implement
procedures to
minimize
discharges to
MS4 during
firefighting post-
emergency
cleanup and
disposal
activities.
By July 1:
Update
ordinance or
other regulatory
mechanism in
effect, if
necessary, to
meet the
requirements of
this section.
C6. Controlling
Runoff
Ongoing:
– Implement &
enforce program
to reduce
pollutants in
runoff.
– Train Staff
By June 30:
Adopt and make
effective local
program that
meets
requirements of
S5.C.6.b.i-iv.
S5 Permit
Components
Ongoing
Program
Implementation
2024
2025
2026
2027
2028
2029
C7. Stormwater
Management
for Existing
Development
(SMED)
March 31:
Provide list of
planned,
individual
projects
scheduled for
funding or
implementation
during this permit
term for the
purposes of
meeting the
assigned
equivalent
acreage in
Appendix 12
using the using
the report format
in Appendix 12.
By March 31:
Submit
documentation/
report showing
that the
jurisdiction has
fully funded,
started
construction or
completely
implemented
project(s) that
meet assigned
equivalent
acreage as
described in
App 12.
Report the
amount of
estimated or
projected
equivalent acres
managed by
facility retrofits
which will be
credited to the
next permit term
(2029-2034)
S5 Permit
Components
Ongoing
Program
Implementation
2024
2025
2026
2027
2028
2029
C8. Source
Control for
Existing
Development
Ongoing:
– Implement &
enforce program
to reduce
pollutants in
runoff from
existing
development.
-Update
inventory at least
once per 5 years.
-Annually inspect
20% of inventory
list.
– Train Staff
Aug 1:
Update and
make effective
the ordinance or
other
enforceable
document, if
necessary, to
meet the
requirements of
this section.
S5 Permit
Components
Ongoing
Program
Implementation
2024
2025
2026
2027
2028
2029
C9. Operations
& Maintenance
Ongoing:
-Inspect and
maintain
Permittee
owned/operated
catch basins and
stormwater
BMPs/facilities,
and regulated
stormwater
BMPs/facilities.
-Maintain
updated SWPPP
at heavy
equipment,
maintenance,
and storage
facilities.
-Train Staff
Dec 31:
All catch basins
and inlets
owned or
operated by the
Permittee shall
be inspected,
and every two
years thereafter.
By June 30:
Adopt updates
to maintenance
standards, as
needed, to meet
the
requirements of
this section.
July 1:
Develop and
implement
street sweeping
program.
Between July –
Dec:
Sweep high
priority areas
once
By Dec 31:
Update
documentation
of practices,
policies, and
procedures to
reduce SW
impacts from all
permittee lands
By March 31
(ongoing from
this year
forward):
Report on all
items described
in S5.C.9.e.v(a-
f).
Between July-
Sept (ongoing
from this year
forward):
Sweep high
priority areas
once
Annually
(ongoing from
this year
forward):
Sweep high
priority areas 2
additional times
to the July-Sept
event at timing
determine by
Permittee.
S8 Permit
Components
Ongoing
Program
Implementation
2024
2025
2026
2027
2028
2029
S8.A & S8.B
By Aug 15, 2025-
2029:
Make annual
payments into
SAM per S8.D
instructions
By Dec 1: All
Permittees who
chose S8.A.2
and/or S8.B.2
option for the
2019-2024
permit make a
one-time
payment to
SAM fund per
S8.D.
All Permittees,
except
Aberdeen and
Centralia, shall
notify Ecology
in writing,
certified with a
G19 signature,
if they will
select S8.A.2.a
or S8.A.2.a for
Regional Status
and Trends
Monitoring, as
well as their
choice of
S8.B.2.a or
S8.B.2.b for
SWMP
Effectiveness
and Source ID
Studies.
S8 Permit
Components
Ongoing
Program
Implementation
2024
2025
2026
2027
2028
2029
S8.C –
Stormwater
Discharge
Monitoring
(applies only to
Permittees who
choose to
conduct
discharge
monitoring per
S8.A.2.b and/or
S8.B.2.b.
By June 30:
Submit a draft
stormwater
discharge
monitoring
QAPP for review
and approval.
By August 15:
Final QAPP
submitted to
Ecology, or
within 60 days of
receiving
Ecology's
comments on
the draft
(whichever is
later).
By Oct 1:
Flow monitoring
shall begin, or
within 30 days of
receiving
Ecology’s final
QAPP approval
(whichever is
later).
By Oct 1:
Stormwater
discharge
monitoring fully
implemented.

Business Outreach Brochure Kit

Stormwater Pollution Prevention for PRESSURE WASHING Keep our communities, creeks, lakes, and Puget Sound healthy. Special Considerations for Buildings: PCBs • Buildings built or renovated from about 1950 to 1979 had widespread use of PCBs (polychlorinated biphenyls). • PCBs may be present in caulking, grout, joint materials, paints, sealants, lubricants, roofing, metal coatings, and light ballasts. • PCBs are toxic and cancercausing chemicals. Wash Water Disposal • Wash water that contains solid waste and petroleum products must be filtered prior to disposal. Hazardous Waste Disposal • Pressure washing can create hazardous waste that needs special disposal, including: » Dirty absorbent materials that may contain PCBs. » Rags or absorbent pads with gasoline, oils, grease, thinner, solvent, or organic chemicals. • Dispose of hazardous waste properly. » Option 1: Use a licensed waste hauler. » Option 2: Bring small quantities of accepted waste to a hazardous waste drop-off location. • Keep records of your hazardous waste disposal: who hauled it, how much was hauled, and when it was hauled. To request an ADA accommodation, contact Ecology by phone at 360-407-6600 or email at [email protected], or visit ecology.wa.gov/accessibility. For Relay Service or TTY call 711 or 877-833-6341. Type of Wash Water Dispose to Sanitary Sewer Dispose to Ground Dispose to Storm Drain or Natural Water Body Plain water + filtered Soapy water + filtered Dirty/turbid water Oily water + oil-absorbing filter Dirty or soapy water with no filtration PCBs In Buildings tinyurl.com/tmbth5wn * * * *check with your local jurisdiction Find a Hazardous Waste Service Provider Find a Hazardous Waste Disposal Site tinyurl.com/y64pt48r tinyurl.com/46nczhbk Setup • Identify where wash water will flow and temporarily cover storm drains. • Use a containment system to capture wash water. » For ground surfaces, use a pressure washer with a built-in water reclaimation system. » For equipment and vehicles, line the area with a ground tarp and surround it with a temporary berm. • Equipment needed for portable wash water containment system: Pressure Washing Best Practices for Pollution Prevention Capture the Wash Water • While washing, move or adjust the containment system to capture and contain the wash water. Treat the Wastewater • Use filter fabric to filter the water. • Solid pieces of waste go into the garbage. General Best Practices for Pressure Washing • Sweep work areas to cleanup. • Cover or block nearby storm drains. • Do NOT direct or pour wash water into a storm drain. • DO manage wash water by one of these options: 1. Direct into a landscaped area to soak into the ground. 2. Discharge to the sanitary sewer (toilet or indoor sink) is okay if the water has only small amounts of grit or oil. The Problem • Wastewater from washing practices can contain toxic pollutants. • Pressure washing can release pollutants from surfaces due to the force of the water. • When not cleaned up properly, waste from washing can pollute stormwater runoff. • Storm drains flow to the nearest creek, lake, wetland, or Puget Sound. Only Rain Down the Drain • Regulations and laws about pressure washing can vary by location, and some jurisdictions strictly regulate pressure washing. • But they all have one thing in common: ONLY RAIN DOWN THE DRAIN. • Do NOT use soap or chemicals. • Wash water that contains soap (including biodegradable), chemicals, soil, or is untreated should NOT be dumped – these are pollutants and can kill fish. Sweep and use dry cleanup methods. Do NOT hose off the ground. Stormwater Pollution Education Guide apps.ecology.wa.gov/ publications/ documents/0710058.pdf DIY Wash Water Reclaim System youtube.com/watch ?v=cmdxslBDtFE BMPs for Washing and Steam Cleaning Vehicles / Equipment / Building Structures tinyurl.com/59ms2ck7 berm around shop catch basin covered missing containment berm missing ground cover » Storm drain grate covers » Ground cover tarps » Portable pump and hoses » Portable ground berm » Sand bags » Absorbent pads and socks/boom Prevención de la contaminación del agua pluvial para LAVADO A PRESIÓN Cuide la salud de nuestra comunidades, arroyos, lagos y de Puget Sound. Consideraciones especiales para edificios: PCB • Los edificios construidos o renovados entre 1950 y 1979 utilizaron de manera general materiales llamados PCB (policlorobifenilos). • Los PCB pueden estar presentes en masilla, selladores, materiales de unión, pinturas, sellantes, lubricantes, techos, revestimientos de metales y balastos de iluminación. • Los PCB son sustancias químicas tóxicas y pueden provocar cáncer. Eliminación del agua de lavado • El agua de lavado que contenga desechos sólidos y productos de petróleo debe filtrarse antes de eliminarse. INFORMACIÓN DE CONTACTO Y LOGOTIPO LOCAL Eliminación de desechos peligrosos • El lavado a presión puede generar desechos peligrosos que deben eliminarse de manera especial, que incluyen: » Materiales absorbentes sucios que pueden contener PCB. » Trapos o materiales absorbentes con gasolina, aceites, grasa,thinner, solventes o sustancias orgánicas. • Elimine los desechos peligrosos de manera apropiada. » Opción 1: contrate a un recolector de desechos autorizado. » Opción 2: lleve cantidades pequeñas de desechos aceptados a un centro de recolección de desechos peligrosos. • Mantenga registros de su eliminación de desechos peligrosos: quién los transportó, qué cantidad se transportó y cuándo se transportó. Para solicitar una adaptación conforme a la ADA, llame a Ecología al teléfono 360-407-6600 o envíe correo electrónico a [email protected], o visite ecology.wa.gov/accessibility. Para servicio de retransmisión o TTY, llame al 711 o al 877-833-6341. Tipos de agua de lavado Eliminar en el drenaje sanitario Eliminar en la tierra Eliminar en el drenaje pluvial o cuerpos de agua Agua limpia y filtrada Agua jabonosa y filtrada Agua sucia o turbia Agua con aceite y filtro absorbente de aceite Agua sucia o jabonosa sin filtrar PCB en edificios tinyurl.com/tmbth5wn * * * *consulte a su jurisdicción local. Encuentre un proveedor de servicios para materiales peligrosos Encuentre un centro de eliminación de materiales peligrosos tinyurl.com/y64pt48r tinyurl.com/46nczhbk Preparación • Identifique a dónde fluirá el agua del lavado y cubra temporalmente las entradas del drenaje pluvial. • Use un sistema de contención para capturar el agua de lavado. » En la superficie del suelo, use una lavadora a presión con un sistema integrado de recuperación de agua. » En equipos y vehículos, cubra el área con una lona superficial y rodéela con una barrera temporal para contener el agua. • Equipo necesario para un sistema portátil de contención del agua de lavado: Mejores prácticas para prevenir la contaminación en el lavado a presión Capture el agua de lavado • Mientras hace el lavado, mueva o ajuste el sistema de contención para capturar y contener el agua de lavado. Trate las aguas residuales • Use un filtro de tela para filtrar el agua. • Los desechos sólidos deben ir a la basura. Mejores prácticas generales para el lavado a presión • Barra las áreas de trabajo que limpiará. • Cubra o bloquee las entradas de drenaje pluvial cercanas. • NO dirija ni vierta el agua de lavado al drenaje pluvial. • Maneje el agua de lavado con una de estas opciones: 1. Diríjala hacia zonas con jardines, para que se absorba en el suelo. 2. Descárguela en el drenaje sanitario (inodoro o lavabo en interiores), no hay problema si el agua tiene pequeñas cantidades de suciedad o aceite. El problema • Las aguas residuales del lavado pueden contener contaminantes tóxicos. • El lavado a presión puede liberar contaminantes de las superficies debido a la fuerza del agua. • Cuando no se limpian correctamente, los residuos del lavado pueden contaminar los escurrimientos de aguas pluviales. • El drenaje pluvial fluye hacia el arroyo, lago o humedal más cercano, o a Puget Sound. Solo lluvia en el drenaje • Las reglamentaciones y leyes referentes al lavado a presión pueden variar según el lugar, y algunas jurisdicciones regulan estrictamente el lavado a presión. • Pero todas tienen una cosa en común: SOLO LLUVIA EN EL DRENAJE. • NO use jabón ni sustancias químicas. • El agua de lavado que contenga jabón (incluso biodegradable), sustancias químicas, suciedad o que no esté tratada, NOdebe vaciarse en el drenaje; estos contaminantes pueden matar peces. Barra y use métodos de limpieza en seco. NO limpie el piso con manguera. Guía educativa sobre la contaminación de aguas pluviales apps.ecology.wa.gov/ publications/ documents/0710058.pdf Sistema de recuperación de agua de lavado youtube.com/watch ?v=cmdxslBDtFE Mejores prácticas para lavar y limpiar con vapor vehículos, equipos y edificios tinyurl.com/59ms2ck7 barrera alrededor del taller entrada de drenaje cubierta no hay barrera de contención no hay cubierta sobre el piso » Cubiertas de entradas de drenaje pluvial » Lonas para cubrir el suelo » Bomba portátil y mangueras » Barrera terrestre portátil » Bolsas de arena » Cubiertas y cordones absorbentes Carry a Spill Kit • Use absorbent pads or materials to cleanup drips and spills of chemicals, gas, or oil. Hazardous waste • Car batteries: bring to a designated battery recycler. • Used oil: store in a container with a secured lid labelled “Used Oil.” Filters can go in the garbage if oil if fully drained • Shop towels and rags: if dirty with oils, solvent, or anti-freeze, use a laundry service or dispose at an approved hazardous waste facility. Stormwater Pollution Prevention for MOBILE AUTO REPAIR BUSINESSES Keep our communities, creeks, lakes, and Puget Sound healthy. • Engine parts: remove residual automotive fluids and store separately (don’t mix wastes). If parts are stored outside, cover with a tarp and elevate off the ground to avoid contact with rain. • Absorbent materials: used absorbents for oil can be bagged and put in the garbage. Absorbents with other vehicle or equipment fluids are hazardous waste. • Dispose of hazardous waste properly. • Option 1: use a licensed waste hauler. • Option 2: bring small quantities of accepted waste to a hazardous waste drop-off location. • Keep records of your hazardous waste disposal: who hauled it, how much was hauled, and when it was hauled. To request an ADA accommodation, contact Ecology by phone at 360-407-6600 or email at [email protected], or visit ecology.wa.gov/accessibility. For Relay Service or TTY call 711 or 877-833-6341. Find a Hazardous Waste Service Provider Find a Hazardous Waste Disposal Site tinyurl.com/y64pt48r tinyurl.com/46nczhbk Body Repair, Sanding, and Painting • Use vacuum sanding equipment. • Use solvent alternatives, such as cleaning with a wire brush or use alcohol-based cleaner. • For sanding and spot painting, cover ground to capture drips and contain all sanding dust. • Transfer paint and liquids over drip pans or absorbent pads to prevent material from contacting the ground. • Auto body paint coating must be done in a spray booth with special features to minimize environmental impact. Mobile Auto Repair Best Practices for Pollution Prevention Repair and Mechanical Work • Use drip pans and absorbent pads to catch drips. • Water and rags that contain a significant amount of degreaser/solvents or automotive fluids, such as oil and gas, are considered hazardous waste and must be disposed of properly. • Transfer waste fluids to a designated waste storage container as soon as possible; do not leave drain pans and other open containers of fluids unattended. Label the container’s contents. • Never pour automotive fluids or solvents to the ground, into a storm drain, waters bodies, or into a dumpster. Prevent Pollution Using the Four Cs COVER • Protect the work area from rain and work under cover. • Cover materials stored outdoors, including parts, containers, and equipment. CAPTURE • Use drip pans/containers with lids to collect vehicle waste fluids. • Use absorbent pads or materials to catch drips in work areas and during fluid transfer. If it is raining do not use waste cardboard. CLEAN • Cleanup spills immediately. • Prevent spills from reaching storm drains, natural waters, soil/vegetated areas, and cracks in the pavement. • Sweep and/or vacuum the work site – DO NOT hose it down. CONTAIN • Transfer and transport waste fluids in containers with a secure lid. • Use secondary containment pallets under containers to catch spills and drips. • Do NOT dispose of waste fluids on the ground, in the street, or into a storm drain. Small Scale Auto Body Painting pscleanair.gov/215/ Rules-Requirements Tenga con usted un kit para derrames • Use paños o materiales absorbentes para limpiar fugas y derrames de sustancias químicas, gasolina o aceite. Desechos peligrosos • Baterías de automóvil: llevar a un centro designado de reciclaje de baterías. • Aceite usado: guardar en un recipiente con tapa hermética y rotulado “Aceite usado”. Los filtros pueden depositarse en la basura después de drenar por completo el aceite. • Toallas y trapos del taller: si están sucios de aceites, solventes o anticongelante, use un servicio de lavandería o deséchelos en un centro aprobado de recolección de desechos peligrosos. Prevención de la contaminación del agua pluvial para EMPRESAS DE REPARACIÓN AUTOMOTRIZ MÓVIL Cuide la salud de nuestra comunidades, arroyos, lagos y de Puget Sound. INFORMACIÓN DE CONTACTO Y LOGOTIPO LOCAL • Piezas de motor: elimine los residuos de líquidos automotrices y guárdelos por separado (no mezcle los desechos). Si las piezas se almacenan en el exterior, cúbralas con una lona y sepárelas del piso para evitar que entren en contacto con la lluvia. • Materiales absorbentes: los absorbentes usados con aceite pueden meterse a una bolsa y depositarse en la basura. Los absorbentes con otros líquidos de vehículos o equipos son desechos peligrosos. • Elimine los desechos peligrosos de manera apropiada. • Opción 1: contrate a un recolector de desechos autorizado. • Opción 2: lleve cantidades pequeñas de desechos aceptados a un centro de recolección de desechos peligrosos. • Mantenga registros de su eliminación de desechos peligrosos: quién los transportó, qué cantidad se transportó y cuándo se transportó. Para solicitar una adaptación conforme a la ADA, llame a Ecología al teléfono 360-407-6600 o envíe correo electrónico a [email protected], o visite ecology.wa.gov/accessibility. Para servicio de retransmisión o TTY, llame al 711 o al 877-833-6341. Encuentre un proveedor de servicios para materiales peligrosos Encuentre un centro de eliminación de materiales peligrosos tinyurl.com/y64pt48r tinyurl.com/46nczhbk Hojalatería, lijado y pintura • Use equipo de lijado con aspiradora. • Use alternativas a los solventes, como limpiar con un cepillo de alambre o usar un limpiador con base de alcohol. • Para lijar y pintar zonas específicas, cubra el suelo para capturar el goteo y contenga todo el polvo de lijado. • Transfiera la pintura y los líquidos sobre bandejas o cubiertas absorbentes para impedir que el material entre en contacto con el piso. • La pintura automotriz debe hacerse en una caseta de pintura con características especiales para minimizar su impacto ambiental. Mejores prácticas para prevenir la contaminación en la reparación automotriz móvil Reparaciones y trabajos mecánicos • Use bandejas y cubiertas absorbentes para capturar el goteo. • El agua y los trapos que contengan una cantidad significativa de desengrasantes, solventes o líquidos automotrices, como gasolina o aceite, se consideran desechos peligrosos y deben eliminarse de manera apropiada. • Transfiera los líquidos de desecho a un recipiente designado para almacenamiento de desechos lo antes posible; no deje sin atención las bandejas de drenado u otros recipientes abiertos con líquidos. Marque el recipiente para indicar su contenido. • Nunca vierta líquidos automotrices o solventes en el suelo, el drenaje pluvial, cuerpos de agua o depósitos de basura. Prevenga la contaminación con estos cuatro pasos CUBRIR • Proteja el área de trabajo de la lluvia y trabaje bajo una cubierta. • Cubra los materiales que se guardan en exteriores, como piezas, recipientes y equipos. CAPTURAR • Use bandejas y recipientes con tapa para recolectar los líquidos de desecho de los vehículos. • Use cubiertas o materiales absorbentes para capturar el goteo en las áreas de trabajo y durante las transferencias de líquidos. Si está lloviendo, no use cartón. LIMPIAR • Limpie los derrames de inmediato. • Evite que los derrames lleguen a las entradas del drenaje pluvial, aguas naturales, áreas con tierra o v egetación y grietas en el pavimento. • Barra o aspire el lugar de trabajo – NO lo limpie con manguera. CONTENER • Transfiera y transporte los líquidos de desecho en recipientes con tapa hermética. • Use tarimas de contención secundaria debajo de los recipientes para atrapar los derrames y fugas. • NO vierta los líquidos de desecho en el suelo, en la calle, ni en el drenaje pluvial. Pintura automotriz a pequeña escala pscleanair.gov/215/ Rules-Requirements Stormwater Pollution Prevention for COMMERCIAL LANDSCAPING Keep our communities, creeks, lakes, and Puget Sound healthy. Carry a Spill Kit • Use absorbent pads or materials to cleanup drips and spills of chemicals, gas, or oil. Power Tools and Equipment Maintenance • Store gas and other fuels in labeled container with a closeable lid and nozzle. • Place drip pans or absorbent pads on the ground in the refueling area to catch drips. • Put rags with oil, gas, grease, or chemicals into a container labeled “Hazardous Waste.” Keep the lid closed. Hazardous Waste Disposal • Landscaping activities can create hazardous waste that needs special disposal, including rags or absorbent materials with: • Vehicle and equipment fluids, including gas, oil, grease, thinner, and solvent. • Organic chemicals, including pesticides, herbicides, and fertilizer. • Dispose of hazardous waste properly. • Option 1: use a licensed waste hauler. • Option 2: bring small quantities of accepted waste to a hazardous waste drop-off location. • Keep records of your hazardous waste disposal: who hauled it, how much was hauled, and when it was hauled. To request an ADA accommodation, contact Ecology by phone at 360-407-6600 or email at [email protected], or visit ecology.wa.gov/accessibility. For Relay Service or TTY call 711 or 877-833-6341. Find a Hazardous Waste Service Provider Find a Hazardous Waste Disposal Site tinyurl.com/y64pt48r tinyurl.com/46nczhbk Lawn Maintenance • Check equipment for leaks before using. • Refuel equipment over a drip pan or oil-absorbent pad to catch drips. • Use electric or battery-powered equipment and minimize the use of gasoline and oil. Excavating and Grading • Avoid tracking mud and dirt onto the street, sidewalks, and gutters from vehicles and equipment when excavating and grading. • Protect storm drains at and near jobsites using filter bags or absorbent socks/booms. • Use fiber rolls, vegetation mats, silt fencing, and other erosion control materials to stabilize the soil after grading or excavating. • Direct muddy water into landscaped areas to soak into the ground. Commercial Landscaping Best Practices for Pollution Prevention Cleanup • Blow dead leaves and grass clippings into beds as mulch. Do not blow onto streets or into storm drains. • Rinse empty containers and dispose of rinse water in landscaped areas or reuse when making another spray mixture of the same chemical. • Sweep up dry materials. • Use water for cleanup ONLY where it will drain to landscaped areas. • Do NOT use soap or chemicals in wash water, and do NOT direct it to the street, gutter, or storm drain. Irrigation • Use programmed irrigation systems to avoid overwatering, which may cause soil erosion. Prevent runoff from entering surface waters and paved areas. Train Crews • Train crews yearly on the use of hazardous chemicals and how to avoid spills and how to clean them up. • Keep a record of the trainings and which staff attended. • Follow guidelines in an Integrated Pest Management Plan, either your own or one from your local jursidiction. • Know your noxious weeds and local noxious weed laws. • Use organic fertilizer when possible. • Spread only the amount needed (and not more), follow label instructions. • Keep the lid closed when not using, and make sure the label is legible and accurate. • Store chemicals indoors or under cover and on a secondary containment pallet to catch any spills or drips. • Never apply chemicals if it is raining or about to rain. Integrated Pest Management Plan Weed Control Practices Pesticides, Herbicides, and Fertilizer King County Integrated Pest Management Plan kingcounty.gov/ipm kingcounty.gov/ WeedControlPractices Prevención de la contaminación del agua pluvial para JARDINERÍA COMERCIAL Cuide la salud de nuestra comunidades, arroyos, lagos y de Puget Sound. Tenga con usted un kit para derrames • Use paños o materiales absorbentes para limpiar fugas y derrames de sustancias químicas, gasolina o aceite. Mantenimiento de equipos y herramientas motorizadas • Guarde la gasolina y otros combustibles en recipientes rotulados con tapa y boquilla. • Coloque bandejas para escurrimientos o paños absorbentes en el piso, en el área de carga de combustible, para capturar los goteos. • Coloque los trapos con aceite, gasolina, grasa o sustancias químicas en un recipiente con el rótulo “Materiales peligrosos”. Mantenga cerrada la tapa. INFORMACIÓN DE CONTACTO Y LOGOTIPO LOCAL Eliminación de desechos peligrosos • Las actividades de jardinería pueden generar desechos peligrosos que deben eliminarse de manera especial, y que incluyen a los trapos y materiales absorbentes con: • Líquidos de vehículos y equipos, como gasolina, aceite, grasa, thinner y solventes. • Sustancias orgánicas, como pesticidas, herbicidas y fertilizantes. • Elimine los desechos peligrosos de manera apropiada. • Opción 1: contrate a un recolector de desechos autorizado. • Opción 2: lleve cantidades pequeñas de desechos aceptados a un centro de recolección de desechos peligrosos. • Mantenga registros de su eliminación de desechos peligrosos: quién los transportó, qué cantidad se transportó y cuándo se transportó. Para solicitar una adaptación conforme a la ADA, llame a Ecología al teléfono 360-407-6600 o envíe correo electrónico a [email protected], o visite ecology.wa.gov/accessibility. Para servicio de retransmisión o TTY, llame al 711 o al 877-833-6341. Encuentre un proveedor de servicios para materiales peligrosos Encuentre un centro de eliminación de materiales peligrosos tinyurl.com/y64pt48r tinyurl.com/46nczhbk Mantenimiento de jardines • Revise que el equipo no tenga fugas antes de usarlo. • Cargue de combustible el equipo sobre una bandeja o un trapo absorbente para atrapar el goteo. • Use equipos eléctricos o a baterías, y minimice el uso de gasolina y aceite. Excavación y nivelación • Al hacer trabajos de excavación o nivelación, no arrastre lodo y tierra a la calle, las aceras y las canaletas con vehículos y equipos. • Proteja los drenajes pluviales que estén en los lugares de trabajo, o cerca de ellos, con bolsas filtrantes o cordones absorbentes. • Use rollos de fibra, tapices vegetales, cortinas de sedimentación y otros materiales para control de la erosión para estabilizar la tierra después de nivelar o excavar. • Dirija las aguas lodosas hacia zonas con jardines, para que se absorban en el suelo. Mejores prácticas para prevenir la contaminación en la jardinería comercial Limpieza • Sople las hojas secas y el césped cortado hacia la tierra para usar como mantillo. No las sople hacia las calles, ni a las entradas del drenaje pluvial. • Enjuague los recipientes vacíos y deseche el agua de enjuague en áreas con jardines, o reutilícela al preparar otra mezcla para aerosol de la misma sustancia química. • Barra los materiales secos. • Use agua para limpiar SOLAMENTE cuando se drenará a áreas con jardines. • NO use jabón o sustancias químicas en el agua para lavar y NO la dirija hacia las calles, las canaletas o las entradas de drenaje pluvial. Riego • Use sistemas de riego programables para evitar el riego excesivo, que puede provocar erosión del suelo. Evite que los escurrimientos lleguen a aguas superficiales o áreas pavimentadas. Capacitación de trabajadores • Capacite cada año a sus trabajadores sobre el uso de sustancias químicas peligrosas, cómo evitar derrames y cómo limpiarlos. • Mantenga un registro de los cursos de capacitación y los empleados que asistieron. • Siga las directrices de un plan integrado de control de plagas, ya sea de usted o de su jurisdicción local. • Conozca sus hierbas nocivas y las leyes locales referentes a hierbas nocivas. • Use fertilizante orgánico siempre que sea posible. • Esparza solamente la cantidad necesaria (y no más), siga las instrucciones de la etiqueta. • Mantenga cerrada la tapa cuando no lo esté usando, asegúrese de que la etiqueta sea legible y correcta. • Guarde las sustancias químicas en interiores o bajo techo y en una tarima de contención secundaria, para atrapar las fugas y derrames. • Nunca aplique sustancias químicas cuando esté lloviendo o a punto de llover. Plan integrado de control de plagas del condado de King Practicas de control de hierbas del plan integrado de control de plagas Pesticidas, herbicidas y fertilizante www.kingcounty.gov/ipm kingcounty.gov/ WeedControlPractices

Taco Tent Q&A

Q&A for “Taco Tents – An Emerging Stormwater Issue”
Presentation at the Aug. 19, 2025, BIG Meeting

Questions and Answers:
Q-1: When you first became aware of this, how did you approach the operators since they work late at night? Did you just have staff stay late or use flex time?
A-1: These operations start around 6 PM and close between 12:00 and 2:00 PM. The required staff and the subconsultant, who provided communication services in Spanish, worked after ours to visit these operations. Staff use flextime for after-hours site visits. The working hours are definitely a challenge because the tents are set up between 6 and 7 pm and work until midnight or 2 am. We worked with our on-call consultant to visit these sites during those working hours.
Q-1b: How did you learn about these businesses?
A-1b: The call came into the Code Enforcement Team that grease was observed around a catch basin. Upon inspection, it was determined that a cleanup was required because we saw food waste and grease. Before we heard about the grease and trash in the catch basins, we heard about some public health issues and that is how we learned what these sites were. We also saw them on the streets ourselves after work as regular citizens. That was when we realized we needed to be agile and have staff out after hours. The work fell primarily to the code enforcement team.
Q-2: Have you thought about putting anything on social media encouraging people to report issues? How do you not make it seem like you are “hunting these businesses down?”
A-2: We know their locations and are creating strategies to work with these businesses to bring them into compliance. For the City of Shoreline, it is a source control and IDDE issue so we are starting with education and outreach first. We want these businesses operating in compliance. We are not putting this on social media, we are just keeping public health aware of the issues.
King County Public Health (KCPH) is putting out information on social media about what types of restaurants, businesses, food trucks and food tents to eat at. KCPH is focusing on informing the public that the public health safety signs posted at a business means this business is safe to eat at. We are focusing on education for the public and for these businesses.
Discussion: City of Bothell discussed Bothell’s experience working with these businesses, a staff member went out and met them. Most operators speak only Spanish. They come from LA where there is a lot of competition to here where there is less and they can make better money. One person (not known) owns all the equipment these taco tents use and that person hires people to work at locations s/he determines will make money. Once they locate a spot, they continue to use that location. When Bothell shuts one down, another operator moves in and operates and doesn’t know about the other operator being shut down.
Bothell recommends shutting them down before they get a long line of patrons. The biggest issue is what is dumped in the storm drain. At the end of the night, the tent operators dump the rice and fruit juice drink they did not sell. If the taco tent is on private property, it is possible to shut them down but it needs a “no trespass order” from the property owner after which code compliance can shut them down. In the right of way, it is more difficult because the police department does not want to engage with them.
Shoreline sees fruit drinks dumped as well. Providing a grease container for them would create the idea that what they are doing is legitimate, especially as it relates to public health issues and could open the city to liability if people get sick.
One idea was to take photos of license plates to figure out who owns the equipment vans but that is a grey area legally; it’s not a good use of police resources and if a law is not violated, it is not a correct use of police resources. Also, with the ICE raids, there is sensitivity around enforcing on this community and making them feel unwelcome.
Summary:
There is community demand for these vendors. They start set ups around 6:00 pm in locations around the city with high foot traffic. The operators typically speak Spanish, they do not own the equipment they use, the equipment is owned by one person who rents it to the operators. At the end of the night, the equipment is put away, the operators wash down the spaces where they cook to clean any stains. This water, along with the fruit and rice drink they did not sell, goes into the storm drains.
Shutting down these businesses is difficult; they are not breaking any laws overtly. The main concerns are public health issues related to food handling. Their washdown and disposal methods are not legal. This is difficult to enforce in the right-of-way. Police are reluctant to engage with this group because of ICE raids and not wanting to create additional hostility in the community.
Outreach and education for IDDE compliance needs to be in Spanish and needs to focus on solutions for their waste material. Also, there needs to be food handling requirements communicated to them to prevent food borne illness.

2024 Stormwater Training Plan Template for Western Washington

Summary: WW Training Template for Phase II, 2024-2029 Permit Training Plan template, training analysis for 2024 – 2029 permit

Summary:
WW Training Template for Phase II, 2024-2029 Permit Training Plan template, training analysis for 2024 – 2029 permit

Lake Stevens SMED template for 2024 Permit

Summary: SMED, Stormwater Management for Existing Development, reporting spreadsheet, annual report, SMED projects, SMED template, Permit condition S5.C.7.b

Summary:
SMED, Stormwater Management for Existing Development, reporting spreadsheet, annual report, SMED projects, SMED template, Permit condition S5.C.7.b