Stormwater Pollution Prevention Manual King County Stormwater Services 132 July 2021 R-7: Residential Swimming Pool and Hot Tub Maintenance Improper drainage or discharge of water from swimming pools, hot tubs, or spas to storm drains or ditches during maintenance activities can lead to pollution of streams, rivers, and lakes. Chemicals used in pool, spa, and hot tub maintenance can contaminate stormwater and surface water if they are not stored, used, and disposed of correctly. Potential pollutants can include but are not limited to fecal coliform bacteria, nutrients, oxygen demanding substances, pH, and sediment. Best Management Practices (BMPs) are required by King County Water Quality Code (KCC 9.12). If the BMPs included here are not enough to prevent contamination of stormwater, you will be required to take additional measures. Required Operational BMPs • Clean the pool, spa, hot tub, or fountain regularly. • Maintain proper chlorine levels, water filtration, and circulation, which will limit the need to drain the facility. • Manage pH and water hardness to reduce copper pipe corrosion that can stain the facility and pollute receiving waters. • Before using copper algaecides, try less toxic alternatives. Only use copper algaecides if the other alternatives do not work. Ask a pool/spa/hot tub/fountain maintenance service or store for help resolving persistent algae problems without using copper algaecides. • Develop and regularly update a facility maintenance plan that follows all discharge requirements. • Dispose of unwanted chemicals properly. Many of them are hazardous wastes when discarded. • Store pool chemicals under cover and in enclosed containers. Required Water Disposal BMPs If the pool or spa does not have a permanent drain connection, then water must be pumped or drained to the sanitary sewer or meet the following BMPs. • Discharging pool and spa water if sanitary sewer is not available: o Non-saltwater and saltwater pool and spa water Have it hauled off-site for disposal at an approved location; or Infiltrate to ground if all 9 conditions below are met. Saltwater pool and spa water must not be allowed to flow off-site, nor may it enter stormwater drainage systems or surface waters. Saltwater discharges can elevate salt concentrations in your soil and damage vegetation. o Non-saltwater pools and spas only Drain to the stormwater drainage system if all 9 conditions listed below are met Stormwater Pollution Prevention Manual King County Stormwater Services 133 July 2021 • Conditions for draining to ground (non-saltwater and saltwater pools and spas) or to a stormwater drainage system (non-saltwater pools and spas only): 1. No copper-based algaecides were used; 2. The water must be tested to determine chlorine levels and pH; 3. The water is dechlorinated to 0.10 ppm Chlorine or less, using neutralizing chemicals or by letting the pool or spa “sit” long enough to reduce the chlorine level to the allowable limit. The pool or spa must not be used during this period; 4. The pH is neutral (6-8); 5. Free of any coloration, dirt, suds, or algae; 6. Free of any filter media; 7. Free of acid cleaning wastes; 8. Released at a rate that does not cause erosion either onsite or in the drainage system; and 9. At ambient temperature. • Saltwater pool and spa water must not be discharged to the stormwater drainage system. Either infiltrate to ground if all 9 conditions above are met or hire a professional pool-draining service to collect all water for off-site disposal at an approved location. • Diatomaceous earth (commonly used as a filtering agent) and water from back flushing filter systems cannot be discharged to surface waters, storm drainage systems, septic systems, or the ground. Dispose of diatomaceous earth filter material as solid waste. • Do not discharge pool or spa water to a septic system, as it is prohibited and may cause the system to fail. • The discharge of pool and spa filter backwash or cleaning water to the ground, surface waters or the storm drainage system is not allowed. Tips • Hire a professional maintenance company to service your pool, hot tub, or spa. For more information or assistance contact the King County Stormwater Services at 206–477–4811 and visit kingcounty.gov/stormwater.
File Type: pdf
Engaging Community Through Art
Engaging Community
Through Art
The Salmon Creek Mural Project
Eric Lambert, Clark County Public Works – Clean Water Outreach Manager
October 10, 2025
Every project starts with a visionary
Vicki Holman – Clark County,
Washington resident
“The actions of one person
can make a ripple that
becomes a wave.”
400 foot long retaining wall
Vicki saw a problem here.
This 400-foot retaining wall…was ugly.
West end
4,000 square feet of surface area…
East end
…right across from Salmon Creek
Vicki’s outreach strategy – phase 1
1. Talk to everyone
you meet about the
vision, recruit artists.
2. Keep talking to
everyone you meet
about the vision,
recruit artists.
3. Get permission
from wall owners.
4. Persist with
steps 1 & 2.
• Native fish swimming
“upstream”
• Each fish painted by a
community artist
• Diversity of artistic
styles
• Gray tones
Sharing the vision, getting permission
• Graffiti abatement
• Showing community
we respond to
concerns
• Clean Water
messaging
• Supporting public
participation efforts
What other goals could this project meet?
1. Add verbiage:
• Protect our water
• Only rain down the
drain
• Follow the water
• We all live downstream
2. Need for unifying artistic
elements
Refining the vision
1. Artist consultant – Ana the
Artist
2. Volunteer coordinator
3. Road maintenance crew
4. Pollution prevention
assistance
5. Communications
6. Painting support
Assembling a team
• Reach out to diverse
community groups
• Leverage county and
regional social
media channels
• Connect with local
influencers
• Media alerts
Outreach strategy – phase 2
• 80+ artists
• Prioritized small
group decision
making for efficiency
• Missed community
involvement
opportunity
Selection process
• Clean wall
• Primer coat x 2
• Base coat x 2
• Paint unifying elements,
verbiage
• Chalk outlines with printed
submissions
• Video support
Prepping for painting
Pollution prevention!
• Wastewater disposal
• Storm drain protection
• Drop clothes
• Spill kits
Painting day!
• Two shifts – morning &
afternoon
• Two weekends, three
total days
• Safety talk before each
shift
• Volunteers to support
artists
• Artists are LOCKED IN!
• Neighbors are coming
to talk about it.
• Drivers are honking and
cheering!
Unexpected benefits:
• 57 artists
connecting!
• 57 artists sharing!
Each artist:
• Takes a photo with their work
• Signs their work
Artists the project on their
own social networks
Salmon Creek Mural wall
We celebrated!
• Invited media, artists, elected officials
• Launched Salmon Creek Solutions
• Anti-graffiti coating added for
protection and longevity
• Press release after unveiling
• 170,000+ estimated social
media reach
• 80+ posts from artists sharing
about the project
• Picked up by multiple local
media outlets
• Launch point for Salmon Creek
Solutions (SMAP)
Outreach wins
• High community support,
positive feedback
• Morale builder
• Graffiti abatement
• Community talking point
• Connections within the
artist community
Other Public Works wins
“Sometimes the most scenic roads in life
are the detours you didn’t mean to take.”
– Angela Blount
Questions?
Eric Lambert, Clean Water Outreach, Clark County Public Works
[email protected]
2023 Fact sheet for Non-vegetated Filtration Swale Effectiveness Study
Summary: Fact sheet, non-vegetated filter strip, eastern washington, study results non-vegetated filtration strip, BMP efficacy study results, West Richland study fact sheet
NON-VEGETATED FILTRATION SWALE EFFECTIVENESS STUDY
Non-Vegetated Filtration Swale Effectiveness Study | Fact Sheet
Study Goal and Background
The goal of this study was to evaluate the
effectiveness of a non-vegetated filtration swale
BMP. Effectiveness was based upon whether the
BMP could provide basic treatment (80% reduction
of total suspended solids) in accordance with
Ecology treatment performance goals.
Constructing a non-vegetated filtration swale is
highly desirable for locations with hot and dry
summers or in areas where dry periods cause
grass to become dormant or where supplemental
water is needed to establish vegetation. A non-
vegetated BMP will benefit multiple Washington
State Permittees by providing a BMP option that
does not require irrigation. This fact sheet is a
summary of the information found in the Non-
Vegetated Filtration Swale Effectiveness Study
Technical Evaluation Report.
Study Description
The study goal was accomplished through controlled tests conducted at a test site in West
Richland. Four swale design alternatives (alternatives) were tested in 200-foot-long swales at
the site followed by one final swale design alternative (final alternative) as shown in Figure 1.
The final alternative was selected based on the treatment performance of the four alternatives.
A cross-section of the final alternative swale design is shown in Figure 2.
Figure 2: Final Swale Alternative Cross Section
Figure 1: TEST SWALE AND SAMPLE LOCATIONS
NON-VEGETATED FILTRATION SWALE EFFECTIVENESS STUDY
Non-Vegetated Filtration Swale Effectiveness Study | Fact Sheet
Treatment performance was measured from
samples collected from each alternative, which
were analyzed for total suspended solids (TSS). An
influent distribution system mixed and pumped
synthetic stormwater to the swale at the design
flow rate to simulate a storm event (as shown in
Figure 3).
As the synthetic stormwater flowed through the
swale, grab samples (shown in Figure 4) were
collected in eight sample locations that were
spaced at 25-foot increments along the swale.
After each simulated storm event, an amount of
TSS equivalent to one year of loading was
distributed to the swale to stress-test the swale
and determine when the swale would require
maintenance.
The travel time for stormwater to flow through the
swale was recorded at each sample location. The
measured travel time was then used to estimate the velocity of flow through the treatment
layer. This information was used to inform the velocity limits for the swale design guidance.
FIGURE 3: INFLUENT DISTRIBUTION SYSTEM AT TEST SWALE
Figure 4: GRAB SAMPLE FROM TEST SWALE
NON-VEGETATED FILTRATION SWALE EFFECTIVENESS STUDY
Non-Vegetated Filtration Swale Effectiveness Study | Fact Sheet
Study Location
The test site location was south of the City of West Richland Public Works Building and adjacent
to a gravel parking lot (as seen in Figure 5). An existing 430-foot-long swale at the test site was
retrofitted into the two 200-foot-long test swales. The controlled tests were conducted during
the dry season; therefore, no runoff from the gravel parking lot contributed to the test swales.
Results
The initial percent removals for the final alternative indicated that 84.5–87.8% removal of TSS
was achieved for the first simulated year, at the sample location at 200 feet from the start of
the swale. However, percent removal decreased for the following two simulated years, which
was likely due to modifications to the swale needed near the last sample port, due to observed
erosion from a grade break immediately downstream of the swale. As a result, the samples
collected at the last sample port (200 feet) were discarded and statistical trendline analysis
was used to determine how the swale would have performed if the swale modifications had
not occurred. This analysis is shown in Table 1 and indicates that the swale met performance
goals for the first two years. Since the treatment performance dropped below 80% for the third
year, it is likely that maintenance would need to be performed sometime around the third year
to restore treatment performance. Further testing needs to be done to confirm the
maintenance procedures and schedule.
Figure 5: Test Swale Location
NON-VEGETATED FILTRATION SWALE EFFECTIVENESS STUDY
Non-Vegetated Filtration Swale Effectiveness Study | Fact Sheet
Table 1: Final Alternative Water Quality Results from Trendline Analysis1
Location in Swale
Year 1
Year 2
Year 3
25 FEET
58.5%
-13.2%
11.9%
50 FEET
62.8%
1.00%
21.4%
75 FEET
67.0%
15.3%
30.9%
100 FEET
71.3%
29.5%
40.4%
125 FEET
75.5%
43.8%
49.9%
150 FEET
79.8%
58.0%
59.4%
175 FEET
84.0%
72.3%
68.9%
200 FEET
88.3%
86.5%
78.4%
1. Results shown are concentrations developed using trendlines.
The percent removal results in Table 1 were compared to the TAPE treatment performance
goals for TSS using the bootstrap statistical analysis to predict the treatment performance of
the swale. Years 1 and 2 represent the performance of the swale before maintenance is needed.
However, only two data points were available, causing the result of the bootstrap analysis to
be equivalent to the lower of the two removal efficiencies. The evaluation of removal
efficiencies calculated for years 1–3 added one data point and indicated the swale would meet
the TAPE treatment performance goal for all three simulated years.
The measured travel time for flow to travel through the
swale was 50 minutes, from which a design velocity of
0.066 ft/sec was calculated. It is anticipated that
treatment will be provided by a swale 200 feet long if the
velocity and residence time are less than or equal to the
values measured during the study.
Future Action Recommendations
Submit the swale for Conditional Level Use
Designation, so the performance of the swale can be
further evaluated in the field for actual storm events.
Perform additional field testing to understand
effective maintenance activities to restore the swale
treatment performance every two to three years and
the frequency at which more minor action items
such as removal of sediment and debris from inlets,
weed control, etc., should be performed.
Perform additional field testing to understand the impact that a catch basin or forebay
at the inlet would have on treatment performance and maintenance cycle of the swale.
Lead Entity:
City of West Richland
Contributing Entity:
City of Richland
City of Kennewick
City of Pasco
City of Walla Walla
Walla Walla County
City of Moses Lake
City of Pullman
Idaho Dept. of Environmental
Quality
Washington Dept. of Ecology
This
study
was
conducted
support the lead and participating
entities in meeting NPDES MS4
Phase II Permit Requirements for S8
Monitoring and Assessment.
Non-Vegetated Filtration Swale Effectiveness Study | Fact Sheet
Study Goal and Background
The goal of this study was to evaluate the
effectiveness of a non-vegetated filtration swale
BMP. Effectiveness was based upon whether the
BMP could provide basic treatment (80% reduction
of total suspended solids) in accordance with
Ecology treatment performance goals.
Constructing a non-vegetated filtration swale is
highly desirable for locations with hot and dry
summers or in areas where dry periods cause
grass to become dormant or where supplemental
water is needed to establish vegetation. A non-
vegetated BMP will benefit multiple Washington
State Permittees by providing a BMP option that
does not require irrigation. This fact sheet is a
summary of the information found in the Non-
Vegetated Filtration Swale Effectiveness Study
Technical Evaluation Report.
Study Description
The study goal was accomplished through controlled tests conducted at a test site in West
Richland. Four swale design alternatives (alternatives) were tested in 200-foot-long swales at
the site followed by one final swale design alternative (final alternative) as shown in Figure 1.
The final alternative was selected based on the treatment performance of the four alternatives.
A cross-section of the final alternative swale design is shown in Figure 2.
Figure 2: Final Swale Alternative Cross Section
Figure 1: TEST SWALE AND SAMPLE LOCATIONS
NON-VEGETATED FILTRATION SWALE EFFECTIVENESS STUDY
Non-Vegetated Filtration Swale Effectiveness Study | Fact Sheet
Treatment performance was measured from
samples collected from each alternative, which
were analyzed for total suspended solids (TSS). An
influent distribution system mixed and pumped
synthetic stormwater to the swale at the design
flow rate to simulate a storm event (as shown in
Figure 3).
As the synthetic stormwater flowed through the
swale, grab samples (shown in Figure 4) were
collected in eight sample locations that were
spaced at 25-foot increments along the swale.
After each simulated storm event, an amount of
TSS equivalent to one year of loading was
distributed to the swale to stress-test the swale
and determine when the swale would require
maintenance.
The travel time for stormwater to flow through the
swale was recorded at each sample location. The
measured travel time was then used to estimate the velocity of flow through the treatment
layer. This information was used to inform the velocity limits for the swale design guidance.
FIGURE 3: INFLUENT DISTRIBUTION SYSTEM AT TEST SWALE
Figure 4: GRAB SAMPLE FROM TEST SWALE
NON-VEGETATED FILTRATION SWALE EFFECTIVENESS STUDY
Non-Vegetated Filtration Swale Effectiveness Study | Fact Sheet
Study Location
The test site location was south of the City of West Richland Public Works Building and adjacent
to a gravel parking lot (as seen in Figure 5). An existing 430-foot-long swale at the test site was
retrofitted into the two 200-foot-long test swales. The controlled tests were conducted during
the dry season; therefore, no runoff from the gravel parking lot contributed to the test swales.
Results
The initial percent removals for the final alternative indicated that 84.5–87.8% removal of TSS
was achieved for the first simulated year, at the sample location at 200 feet from the start of
the swale. However, percent removal decreased for the following two simulated years, which
was likely due to modifications to the swale needed near the last sample port, due to observed
erosion from a grade break immediately downstream of the swale. As a result, the samples
collected at the last sample port (200 feet) were discarded and statistical trendline analysis
was used to determine how the swale would have performed if the swale modifications had
not occurred. This analysis is shown in Table 1 and indicates that the swale met performance
goals for the first two years. Since the treatment performance dropped below 80% for the third
year, it is likely that maintenance would need to be performed sometime around the third year
to restore treatment performance. Further testing needs to be done to confirm the
maintenance procedures and schedule.
Figure 5: Test Swale Location
NON-VEGETATED FILTRATION SWALE EFFECTIVENESS STUDY
Non-Vegetated Filtration Swale Effectiveness Study | Fact Sheet
Table 1: Final Alternative Water Quality Results from Trendline Analysis1
Location in Swale
Year 1
Year 2
Year 3
25 FEET
58.5%
-13.2%
11.9%
50 FEET
62.8%
1.00%
21.4%
75 FEET
67.0%
15.3%
30.9%
100 FEET
71.3%
29.5%
40.4%
125 FEET
75.5%
43.8%
49.9%
150 FEET
79.8%
58.0%
59.4%
175 FEET
84.0%
72.3%
68.9%
200 FEET
88.3%
86.5%
78.4%
1. Results shown are concentrations developed using trendlines.
The percent removal results in Table 1 were compared to the TAPE treatment performance
goals for TSS using the bootstrap statistical analysis to predict the treatment performance of
the swale. Years 1 and 2 represent the performance of the swale before maintenance is needed.
However, only two data points were available, causing the result of the bootstrap analysis to
be equivalent to the lower of the two removal efficiencies. The evaluation of removal
efficiencies calculated for years 1–3 added one data point and indicated the swale would meet
the TAPE treatment performance goal for all three simulated years.
The measured travel time for flow to travel through the
swale was 50 minutes, from which a design velocity of
0.066 ft/sec was calculated. It is anticipated that
treatment will be provided by a swale 200 feet long if the
velocity and residence time are less than or equal to the
values measured during the study.
Future Action Recommendations
Submit the swale for Conditional Level Use
Designation, so the performance of the swale can be
further evaluated in the field for actual storm events.
Perform additional field testing to understand
effective maintenance activities to restore the swale
treatment performance every two to three years and
the frequency at which more minor action items
such as removal of sediment and debris from inlets,
weed control, etc., should be performed.
Perform additional field testing to understand the impact that a catch basin or forebay
at the inlet would have on treatment performance and maintenance cycle of the swale.
Lead Entity:
City of West Richland
Contributing Entity:
City of Richland
City of Kennewick
City of Pasco
City of Walla Walla
Walla Walla County
City of Moses Lake
City of Pullman
Idaho Dept. of Environmental
Quality
Washington Dept. of Ecology
This
study
was
conducted
support the lead and participating
entities in meeting NPDES MS4
Phase II Permit Requirements for S8
Monitoring and Assessment.
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 Refugeesâ€
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
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 Refugeesâ€
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
Source Control Inspection Program Ch. 2 Code Enforcement Workflow Examples
Summary: King County Ordinance and code for enforcement, version 2
Summary:
King County Ordinance and code for enforcement, version 2
King County Ordinance and code for enforcement, version 2
Fact sheet for Food Trucks and Farmers Market vendors in spanish
Summary: Spanish translation Farmers Market FAQ
wastormwatercenter.org
¿CUÃLES SON LAS PRÃCTICAS RECOMENDADAS
PARA PREVENIR LA CONTAMINACIÓN?
Arme su puesto para el éxito.
Traiga su kit para derrames, capacite al personal y limpie antes de
irse. Asegúrese de inspeccionar con frecuencia su unidad móvil
y arregle cualquier filtración de inmediato.
Capacite a su personal sobre las prácticas
recomendadas.
No vacÃe los cubos con productos de limpieza, el agua del lavado
u otras aguas residuales en el terreno; asegúrese de que se
desechen en un sistema aprobado para aguas residuales. Al
transportar residuos lÃquidos (agua o aceite) entre diferentes
lugares durante el evento, asegúrese de ponerle tapas para evitar
derrames en el suelo.
Guarde todos los suministros adecuadamente.
Guarde todos los suministros en áreas cubiertas y no los guarde
encima o al lado de un desagüe pluvial.
Haga preguntas.
Si tiene preguntas, pida ayuda a nuestro programa de Asistencia
para prevenir la contaminación en todo el estado. El programa de
Asistencia para prevenir la contaminación puede ayudarlo a resolver
las preguntas sobre los efectos o las preocupaciones ambientales.
Asistencia para prevenir la contaminación—Departamento de
EcologÃa del Estado de Washington (https://ecology.wa.gov/
Regulations-Permits/Guidance-technical-assistance/Pollution-
prevention-assistance)
Conozca y siga las reglas para su ubicación.
Recuerde siempre revisar las prácticas aceptables y los requisitos de
permisos de su departamento/distrito de salud local. El personal del
programa de alimentos del Departamento/Distrito de Salud puede
ayudarlo con los requisitos de permisos, armados de operaciones
y preocupaciones sobre la seguridad alimentaria en general.
¿EL MERCADO DE AGRICULTORES SE OCUPARÃ
DE MIS DESECHOS Y DEMÃS RESIDUOS?
Es su responsabilidad consultar a los organizadores de los
eventos especÃficos sobre las prácticas aceptables y los requiÂ
sitos de permisos. Con frecuencia, el Mercado de Agricultores
tiene un sistema establecido para la basura, sin embargo, un
lugar de recolección de basura regular no es un buen lugar
para tirar aceite o desechos lÃquidos.
APROBÉ MI INSPECCIÓN DE SALUD,
¿POR QUÉ NECESITO IMPLEMENTAR LA
PREVENCIÓN DE LA CONTAMINACIÓN?
La protección del ambiente requiere de otras medidas además de
las de protección de la salud de los seres humanos. Asegurarse
de que su basura y demás residuos no afecten el ambiente es su
responsabilidad como propietario de un comercio y es lo que la
ley exige. Si no protege el ambiente puede ser objeto de multas.
¿POR QUÉ NO PUEDO TIRAR EL AGUA
DE LA FREGONA O AGUA CON PRODUCTOS
DE LIMPIEZA EN LOS DESAGÃœES PLUVIALES,
CALLES O ALCANTARILLAS?
Las aguas pluviales se encuentran generalmente en los estaÂ
cionamientos y en las calles, y se conectan con nuestros rÃos y
arroyos directamente. Los jabones, desengrasantes y limpiadores
perjudican la vida silvestre y contaminan los rÃos y arroyos. Es
por esto que los sistemas de desagües pluviales solo son para
recolectar agua de lluvia y no cualquier tipo de agua residual. Al
cumplir con las prácticas recomendadas para mantener las áreas
limpias, asegurarse de que la grasa, los residuos alimenticios, el
agua de hielo derretido, el agua de equipos de refrigeración y el
agua de los lavados se eliminen adecuadamente, está haciendo
su parte para proteger nuestros valiosos recursos acuáticos.
¿POR QUÉ NO PUEDO TIRAR LA GRASA USADA
EN LA BASURA?
No debe tirar desechos lÃquidos en la basura porque pueden fluir
o escurrirse con el agua de lluvia al sistema de aguas pluviales.
La grasa o el aceite usados se debe eliminar adecuadamente o
reciclar cuando sea posible. Para eliminar los residuos lÃquidos,
hágalos “secosâ€, mezclándolos con un absorbente como piedras
sanitarias para gatos.
¿QUÉ HAGO SI DERRAMÉ MI CONTENEDOR DE
ACEITE O GRASA USADOS QUE ESTABA LLEVANDO
AL VERTEDERO PROPORCIONADO POR EL EVENTO?
Asegúrese de limpiar los derrames inmediatamente con su kit para
derrames o un material absorbente como piedras sanitarias para gatos.
Si tiene preguntas sobre dónde obtener un kit para derrames, comuÂ
nÃquese con su especialista para la prevención de la contaminación
local y podrá ayudarlo a conseguir el kit para derrames. La mayorÃa
de los suministros para el kit para derrames están disponibles en
tiendas de venta minorista comunes como Grainger o Home Depot.
MERCADO DE AGRICULTORES Y EVENTOS
PREGUNTAS MÃS FRECUENTES
¿CUÃLES SON LAS PRÃCTICAS RECOMENDADAS
PARA PREVENIR LA CONTAMINACIÓN?
Arme su puesto para el éxito.
Traiga su kit para derrames, capacite al personal y limpie antes de
irse. Asegúrese de inspeccionar con frecuencia su unidad móvil
y arregle cualquier filtración de inmediato.
Capacite a su personal sobre las prácticas
recomendadas.
No vacÃe los cubos con productos de limpieza, el agua del lavado
u otras aguas residuales en el terreno; asegúrese de que se
desechen en un sistema aprobado para aguas residuales. Al
transportar residuos lÃquidos (agua o aceite) entre diferentes
lugares durante el evento, asegúrese de ponerle tapas para evitar
derrames en el suelo.
Guarde todos los suministros adecuadamente.
Guarde todos los suministros en áreas cubiertas y no los guarde
encima o al lado de un desagüe pluvial.
Haga preguntas.
Si tiene preguntas, pida ayuda a nuestro programa de Asistencia
para prevenir la contaminación en todo el estado. El programa de
Asistencia para prevenir la contaminación puede ayudarlo a resolver
las preguntas sobre los efectos o las preocupaciones ambientales.
Asistencia para prevenir la contaminación—Departamento de
EcologÃa del Estado de Washington (https://ecology.wa.gov/
Regulations-Permits/Guidance-technical-assistance/Pollution-
prevention-assistance)
Conozca y siga las reglas para su ubicación.
Recuerde siempre revisar las prácticas aceptables y los requisitos de
permisos de su departamento/distrito de salud local. El personal del
programa de alimentos del Departamento/Distrito de Salud puede
ayudarlo con los requisitos de permisos, armados de operaciones
y preocupaciones sobre la seguridad alimentaria en general.
¿EL MERCADO DE AGRICULTORES SE OCUPARÃ
DE MIS DESECHOS Y DEMÃS RESIDUOS?
Es su responsabilidad consultar a los organizadores de los
eventos especÃficos sobre las prácticas aceptables y los requiÂ
sitos de permisos. Con frecuencia, el Mercado de Agricultores
tiene un sistema establecido para la basura, sin embargo, un
lugar de recolección de basura regular no es un buen lugar
para tirar aceite o desechos lÃquidos.
APROBÉ MI INSPECCIÓN DE SALUD,
¿POR QUÉ NECESITO IMPLEMENTAR LA
PREVENCIÓN DE LA CONTAMINACIÓN?
La protección del ambiente requiere de otras medidas además de
las de protección de la salud de los seres humanos. Asegurarse
de que su basura y demás residuos no afecten el ambiente es su
responsabilidad como propietario de un comercio y es lo que la
ley exige. Si no protege el ambiente puede ser objeto de multas.
¿POR QUÉ NO PUEDO TIRAR EL AGUA
DE LA FREGONA O AGUA CON PRODUCTOS
DE LIMPIEZA EN LOS DESAGÃœES PLUVIALES,
CALLES O ALCANTARILLAS?
Las aguas pluviales se encuentran generalmente en los estaÂ
cionamientos y en las calles, y se conectan con nuestros rÃos y
arroyos directamente. Los jabones, desengrasantes y limpiadores
perjudican la vida silvestre y contaminan los rÃos y arroyos. Es
por esto que los sistemas de desagües pluviales solo son para
recolectar agua de lluvia y no cualquier tipo de agua residual. Al
cumplir con las prácticas recomendadas para mantener las áreas
limpias, asegurarse de que la grasa, los residuos alimenticios, el
agua de hielo derretido, el agua de equipos de refrigeración y el
agua de los lavados se eliminen adecuadamente, está haciendo
su parte para proteger nuestros valiosos recursos acuáticos.
¿POR QUÉ NO PUEDO TIRAR LA GRASA USADA
EN LA BASURA?
No debe tirar desechos lÃquidos en la basura porque pueden fluir
o escurrirse con el agua de lluvia al sistema de aguas pluviales.
La grasa o el aceite usados se debe eliminar adecuadamente o
reciclar cuando sea posible. Para eliminar los residuos lÃquidos,
hágalos “secosâ€, mezclándolos con un absorbente como piedras
sanitarias para gatos.
¿QUÉ HAGO SI DERRAMÉ MI CONTENEDOR DE
ACEITE O GRASA USADOS QUE ESTABA LLEVANDO
AL VERTEDERO PROPORCIONADO POR EL EVENTO?
Asegúrese de limpiar los derrames inmediatamente con su kit para
derrames o un material absorbente como piedras sanitarias para gatos.
Si tiene preguntas sobre dónde obtener un kit para derrames, comuÂ
nÃquese con su especialista para la prevención de la contaminación
local y podrá ayudarlo a conseguir el kit para derrames. La mayorÃa
de los suministros para el kit para derrames están disponibles en
tiendas de venta minorista comunes como Grainger o Home Depot.
MERCADO DE AGRICULTORES Y EVENTOS
PREGUNTAS MÃS FRECUENTES
Low Impact Development Training – Advanced Topics for Long-term LID Operations: Bioretention
Summary: Long-term LID Operations, Bioretention structure and function, inspection activities, track and guide long term maintenance, LID plants, O&M costs, LID administrative tools,
INSTRUCTORS
KATE FORESTER
Landscape Architect
Key project experience:
Stormwater design,
maintenance, manual and
code development
REBECCA DUGOPOLSKI, PE
Senior Engineer
Key project experience: Stormwater
monitoring, design, and NPDES
Permit compliance
OVERVIEW OF PROGRAM
• 2012: Public and private
partners engage state
legislature to fund program
• June 2012: LID Training
Steering Committee
• 2012â€2013: Washington State
Low Impact Development
Training Plan developed:
www.wastormwatercenter.org/
lidâ€background/
• Training program built from
state LID Training Plan
PROGRAM OVERVIEW
• 49 trainings in western and
eastern WA in 2014â€2015.
• 42 trainings in western and
eastern WA in 2015â€2016.
• 39 trainings offered in
western and eastern WA in
2017.
• Three levels: Introductory,
Intermediate, and Advanced.
• Statewide LID Certificate now
available.
PROJECT LEAD
ADDITIONAL TRAINING SUPPORT
OVERVIEW OF PROGRAM
CORE TEAM
Introduction to LID
for Inspection &
Maintenance Staff
INTRODUCTORY
INTERMEDIATE
ADVANCED
Intermediate LID
Design: Rainwater
Collection Systems &
Vegetated Roofs
Intermediate LID
Topics: NPDES Phase
I & II Requirements
Intermediate
LID Design:
Permeable Pavement
Intermediate
LID Design:
Hydrologic Modeling
Advanced Topics in
LID Design:
Bioretention
Advanced Topics in
LID Design:
Permeable Pavement
Advanced Topics in
LID Design:
Hydrologic Modeling
Advanced Topics in
LID Design: Site
Assessment,
Planning & Layout
Advanced Topics in
LID Design: Rainwater
Collection Systems &
Vegetated Roofs
Advanced Topics in LID
Design: Bioretention
Media and Compost
Amended Soils
OVERVIEW OF PROGRAM
Advanced Topics for
Longâ€term LID
Operations:
Bioretention
Intermediate
LID Design:
Bioretention
Advanced Topics for
Longâ€term LID
Operations:
Permeable Pavement
Intermediate LID
Design: Site
Assessment, Planning
& Layout
Introduction to LID
for Inspection &
Maintenance Staff
INTRODUCTORY
INTERMEDIATE
ADVANCED
Intermediate LID
Design: Rainwater
Collection Systems &
Vegetated Roofs
Intermediate LID
Topics: NPDES Phase
I & II Requirements
Intermediate
LID Design:
Permeable Pavement
Intermediate
LID Design:
Hydrologic Modeling
Advanced Topics in
LID Design:
Bioretention
Advanced Topics in
LID Design:
Permeable Pavement
Advanced Topics in
LID Design:
Hydrologic Modeling
Advanced Topics in
LID Design: Site
Assessment,
Planning & Layout
Advanced Topics in
LID Design: Rainwater
Collection Systems &
Vegetated Roofs
Advanced Topics in LID
Design: Bioretention
Media and Compost
Amended Soils
OVERVIEW OF PROGRAM
Advanced Topics for
Longâ€term LID
Operations:
Bioretention
Intermediate
LID Design:
Bioretention
Advanced Topics for
Longâ€term LID
Operations:
Permeable Pavement
Intermediate LID
Design: Site
Assessment, Planning
& Layout
Training Program
Statewide LID
ADVANCED TOPICS FOR LONG-TERM
LID OPERATIONS: BIORETENTION
LEARNING OBJECTIVES
Gain an understanding of the structure and function of
bioretention components
Develop an inâ€depth understanding of inspection
activities to track and guide longâ€term facility
maintenance
Know the requirements for primary preventative and
intensive maintenance of bioretention facilities
Understand how to adaptively manage bioretention
facilities by tracking trends in facility conditions and
outcomes of maintenance activities
LOGISTICS
SCHEDULE
• 8â€hour training
• Lunch is provided
• Site visits/field exercises in the
afternoon
OTHER LOGISTICS
• Restrooms
• Turn off cell phones
• Sign in and sign out
introduction
AGENDA
bioretention O&M
plants
O&M costs
wrap up
administrative tools
23456
introduction
123456
TOPICS
INTRODUCTION
Intro to LID
NPDES Permit
LID O&M Overview
LOW IMPACT DEVELOPMENT (LID):
Stormwater Management Strategy
INTRODUCTION
• Site design & planning
techniques emphasizing
conservation
• Use of smallâ€scale engineered
controls to closely mimic preâ€
development hydrologic
processes
LID: Principles
preâ€developed forest vs. developed condition
INTRODUCTION
2012 LID Technical Guidance Manual for Puget Sound
LID: Smallâ€Scale Engineering Controls
INTRODUCTION
• Infiltration
• Filtration
• Storage
• Evaporation
• Transpiration
Synonyms for LID BMPs:
Green Stormwater Infrastructure (GSI), Integrated Management Practices (IMPs), and On-Site Stormwater
Management BMPs
Replace Preâ€developed
Hydrologic Functions
TOPICS
INTRODUCTION
Intro to LID
NPDES Permit
LID O&M Overview
NPDES PERMIT REQUIREMENTS
INTRODUCTION
National Pollutant Discharge Elimination System (NPDES) Municipal Stormwater
Permits
Municipal Stormwater Permittees in Washington State
Phase I Permittees
Western Washington Phase
II Permittees
Eastern Washington Phase II
Permittees
Seattle
Tacoma
Clark County
King County
Pierce County
Snohomish County
82 Cities
5 Counties
18 Cities
5 Counties
Secondary Permittees: Approximately 45; such as ports and universities
To see a listing of permittees visit
http://www.ecy.wa.gov/programs/wq/stormwater/municipal/MuniStrmWtrPermList.html
NPDES PERMIT REQUIREMENTS:
Requirements Vary By Permittee
INTRODUCTION
• Phase II requirements are somewhat less extensive
• Secondary permittee requirements vary
Timeline for updating maintenance standards
Phase I
Per Section S5.C.9.a of
the Phase I Permit
Phase II
June
2014
June 30,
2015
Dec. 31,
2016
June 30,
2017
June 30,
2018
Most
Permits
Lewis Co. and
Cowlitz Co.
City of
Aberdeen
Per Section S5.C.5.a of the Phase I Permit
NPDES PERMIT REQUIREMENTS:
Requirements Vary By BMP Classification
INTRODUCTION
• Onâ€site Stormwater
Management BMPs
• Stormwater Treatment
and Flow Control
BMPs/Facilities
NPDES PERMIT REQUIREMENTS: Minimum
Requirements (MRs)
INTRODUCTION
Preparation of Stormwater
Site Plans
Construction SWPPP
Source Control
Preserve natural Drainage
Onâ€Site Stormwater
management
Runâ€off Treatment
Flow Control
Wetlands Protection
O&M
NPDES PERMIT REQUIREMENTS: Minimum
Requirements (MRs)
INTRODUCTION
Curtis Hinman
Lotus Springs
• MR #2 – Construction Stormwater
Pollution Prevention Plan (SWPPP)
• Protect LID BMPs from sediment and
compaction
• MR #5 – Onâ€site Stormwater
Management
• Infiltrate, disperse, and retain runoff
onâ€site to the extent feasible
NPDES PERMIT REQUIREMENTS: Minimum
Requirements (MRs)
INTRODUCTION
• MR #6 – Runoff Treatment
• Water quality treatment for
pollutionâ€generating areas
• MR #7 – Flow Control
• Control of flow peaks and flow
durations
• MR #9 – O&M
• Require an O&M manual for
proposed stormwater facilities
and BMPs
NPDES PERMIT REQUIREMENTS: Onâ€site
Stormwater Management BMPs
INTRODUCTION
• Used to help meet MR #5
• May be used to help meet MR #6
and/or MR #7
• “Onâ€site Stormwater Management
BMPsâ€= LID BMPs
NPDES PERMIT REQUIREMENTS: Onâ€site
Stormwater Management BMPs
INTRODUCTION
• Includes the following LID BMPs:
Rain Gardens (BMP T5.14A)
Bioretention (BMP T5.14B)
Permeable Pavement (BMP T5.15)
Vegetated Roofs (BMP T5.17)
Downspout Full Infiltration (BMP T5.10A)
Downspout Dispersion (BMP T5.10B)
Concentrated Flow Dispersion (BMP T5.11)
Sheet Flow Dispersion (BMP T5.12)
Compostâ€amended soils (BMP T5.13)
SR 231 – Aimee S. Navickis-Brasch
NPDES PERMIT REQUIREMENTS: Treatment
and Flow Control BMPs/Facilities
LID O&M OVERVIEW
• Subset of Onâ€site Stormwater Management BMPs
• Used to meet MR #6 or MR #7
• May also be used to meet MR #5
• Includes the following BMPs:
Bioretention (BMP T5.14B)
Permeable Pavement (BMP T5.15)
Vegetated Roofs (BMP T5.17)
Detention facilities
Standard infiltration facilities
Treatment BMPs/facilities
TOPICS
INTRODUCTION
Intro to LID
NPDES Permit
LID O&M Overview
NPDES PERMIT LID O&M REQUIREMENTS:
O&M Standards
INTRODUCTION
Requirement
Onâ€site SW
Management
BMPs
SW Treatment & Flow
Control BMPs/Facilities (MR
#6 and/or MR #7)
Implement maintenance standards
Adopt or update ordinance or other
enforceable documents
Implement practices, policies, &
procedures to reduce stormwater
impacts associated with runoff
NPDES PERMIT LID O&M REQUIREMENTS:
Plan Review
INTRODUCTION
Requirement
Onâ€site SW
Management
BMPs
SW Treatment & Flow
Control BMPs/Facilities (MR
#6 and/or MR #7)
Verify maintenance plan completed &
O&M responsibility assigned
Verify submission of maintenance
instructions
Verify that O&M manual is complete
Review and approve declaration of
covenant (including design details,
figures and maintenance instructions)
and grant of easement
NPDES PERMIT LID O&M REQUIREMENTS:
Inspection
INTRODUCTION
Requirement
Onâ€site SW
Management
BMPs
SW Treatment & Flow
Control BMPs/Facilities (MR
#6 and/or MR #7)
Legal authority to inspect private
stormwater facilities and enforce
maintenance standards
Conduct postâ€construction
inspections to ensure proper
installation
NPDES PERMIT LID O&M REQUIREMENTS:
Inspection (continued)
INTRODUCTION
Requirement
Onâ€site SW
Management
BMPs
SW Treatment & Flow
Control BMPs/Facilities (MR
#6 and/or MR #7)
Conduct inspections during
construction in new residential
developments*
Conduct ongoing annual inspections
Perform spot checks for potentially
damaged BMPs owned/operated by
Permittee after major storm events
*Every 6 months until 90% of the lots are constructed or when construction is
stopped and the site is fully stabilized
NPDES PERMIT LID O&M REQUIREMENTS:
Enforcement
INTRODUCTION
Requirement
Onâ€site SW
Management
BMPs
SW Treatment & Flow
Control BMPs/Facilities (MR
#6 and/or MR #7)
Enforce compliance with
maintenance standards, as needed,
based on inspection
NPDES PERMIT LID O&M REQUIREMENTS:
Training
INTRODUCTION
Requirement
Onâ€site SW
Management
BMPs
SW Treatment & Flow
Control BMPs/Facilities (MR
#6 and/or MR #7)
Train staff involved in plan review,
permitting, construction site
inspections, & enforcement
Implement an ongoing training
program for employees who have
primary O&M job functions that may
impact SW quality
NPDES PERMIT LID O&M REQUIREMENTS:
Record Keeping
INTRODUCTION
Requirement
Onâ€site SW
Management
BMPs
SW Treatment & Flow
Control BMPs/Facilities (MR
#6 and/or MR #7)
Keep records of inspections and
enforcement actions (e.g., inspection
reports, notices of violations)
NPDES PERMIT LID O&M REQUIREMENTS:
Mapping
INTRODUCTION
Requirement
Onâ€site SW
Management
BMPs
SW Treatment & Flow
Control BMPs/Facilities
(MR #6 and/or MR #7)
Scale drawing of the lot(s) and
public ROW that show BMP
locations
Map BMPs owned/operated by
Permittee
Map connections between BMPs
and tributary conveyances*
*Phase I Only
LID O&M GUIDANCE DOCUMENT: Objectives
INTRODUCTION
• Support permittees in implementing
LID maintenance programs
• Provide specific O&M guidance so
permittees can create maintenance
standards that preserve facility
function
• Note: Jurisdictions may want to tailor
the tables in the O&M guidance
document to address varying levelsâ€
ofâ€service
Drena Donofrio
LID O&M GUIDANCE DOCUMENT:
Development
INTRODUCTION
• Two advisory committees
• LID Maintenance Advisory
Committee
• LID Maintenance Administrative
Issues Advisory Committee
• Best available information
• Advisory committee input
• Literature review
• Targeted surveys sent to
jurisdictions, contractors/
landscapers, and vendors
• Guidance will evolve over time
LID O&M GUIDANCE DOCUMENT: Content
INTRODUCTION
• Summary of NPDES Permit Requirements
• Maintaining LID BMPs
• Bioretention facilities
• Rain gardens
• Permeable pavement
• Vegetated roofs
• Programmatic & Administrative Guidance
• Downspout infiltration systems
• Downspout, sheet flow, and conc. dispersion
systems
• Compost amended soils
SPU
LID O&M GUIDANCE DOCUMENT: Content
INTRODUCTION
• BMP description
• How water moves through facility
• Key maintenance considerations to
ensure facility function
• Function by BMP component
• Key maintenance by BMP
component
• Key operations to preserve facility
function
Drena Donofrio
LID O&M GUIDANCE DOCUMENT:
Maintenance Standard and Procedures
INTRODUCTION
LID O&M GUIDANCE DOCUMENT:
Equipment and Materials List
INTRODUCTION
LID O&M GUIDANCE DOCUMENT:
Skills and Staffing
INTRODUCTION
• List of general skills required
• List of additional specialized
skills
• Staffing survey estimates (e.g.,
crew hours per facility, per
linear foot, or per square foot)
bioretention O&M
23456
• Definition and Types
• Components
• How the facility works
• Bioretention vs. rain gardens
• Maintenance standards & procedures
by component
• Equipment and materials
• Skills
OVERVIEW
BIORETENTION O&M
SPU
• Shallow landscaped depressions that
receive stormwater from small
contributing areas
• Small scale, dispersed facilities
• Types:
• Bioretention cells
• Bioretention swales
• Infiltration planters
• Flowâ€through planters
DEFINITION AND TYPES
BIORETENTION O&M
SPU
• Flow Entrance
• Preâ€Settling
• Ponding Area
• Bioretention Soil
• Mulch/Compost
• Vegetation
• Filter Fabric (?)
• Liner (optional)
• Underdrain (optional)
• Overflow
COMPONENTS
BIORETENTION O&M
Eastern WA LID Manual
2009 Clean Water Services LIDA Handbook
HOW THE FACILITY WORKS
BIORETENTION O&M
Bioretention Cell
• Water enters facility
• Ponds
• Infiltrates through
bioretention soil/ gravel
bed
• Infiltrates into underlying
soil
• Ponded water exceeding
max. depth overflows
HOW THE FACILITY WORKS
BIORETENTION O&M
Bioretention Planter
• Water enters facility
• Ponds
• Infiltrates through
bioretention
soil/gravel bed
• Infiltrates into
underlying soil
• Ponded water
exceeding max. depth
overflows
2009 Clean Water Services LIDA Handbook
• Water enters facility
• Ponds
• Infiltrates through
bioretention soil/ gravel
bed
• Infiltrates into
underlying soil
• Ponded water
exceeding max. depth
overflows
• Underdrain collects
water in gravel layer
and routes to overflow
HOW THE FACILITY WORKS
BIORETENTION O&M
Bioretention Planter
2009 Clean Water Services LIDA Handbook
BIORETENTION VS RAIN GARDENS
BIORETENTION O&M
• Bioretention:
• Often includes surface and subsurface
infrastructure
• Designed soil mix
• Meets requirements for MR #6 and #7 and
required for MR #5 if MR #1â€9 required
• Rain gardens
• Usually do not include underâ€drains
• May use less restrictive soil mix guidelines
(e.g., existing soil augmented with compost
and sand)
• Meets MR #5 requirements.
• Inlets
• Ponding area
• Check dams/weirs
• Bioretention soil
• Outlets
• Underdrains
• Mulch
Maintenance Standards & Procedures By
Component
BIORETENTION O&M
Siskyou Street, Portland
INLETS: Types
BIORETENTION O&M
Sheet flow from sidewalk and
roadway
Sheet flow from parking lot
INLETS: Types
BIORETENTION O&M
Curb cut
Curb cut with grate
INLETS: Types
BIORETENTION O&M
Trench drain from roadway
Trench drain from upslope BMP
INLETS: Types
BIORETENTION O&M
Piped inlet from upslope BMP
Piped inlet from roadway/parking lot
• Stormwater must freely
enter facility (no
obstructions)
• Water entering facility
should not cause erosion
INLETS: Maintenance Considerations
BIORETENTION O&M
12th Avenue, Portland
INLETS: Maintenance
BIORETENTION O&M
• Maintain erosion control at concentrated flow inlets
(e.g., rock pad)
• Ensure pipe is not damaged or clogged
Trench drain
Piped flow
Curb cut
INLETS: Maintenance
BIORETENTION O&M
• Remove accumulated…
KATE FORESTER
Landscape Architect
Key project experience:
Stormwater design,
maintenance, manual and
code development
REBECCA DUGOPOLSKI, PE
Senior Engineer
Key project experience: Stormwater
monitoring, design, and NPDES
Permit compliance
OVERVIEW OF PROGRAM
• 2012: Public and private
partners engage state
legislature to fund program
• June 2012: LID Training
Steering Committee
• 2012â€2013: Washington State
Low Impact Development
Training Plan developed:
www.wastormwatercenter.org/
lidâ€background/
• Training program built from
state LID Training Plan
PROGRAM OVERVIEW
• 49 trainings in western and
eastern WA in 2014â€2015.
• 42 trainings in western and
eastern WA in 2015â€2016.
• 39 trainings offered in
western and eastern WA in
2017.
• Three levels: Introductory,
Intermediate, and Advanced.
• Statewide LID Certificate now
available.
PROJECT LEAD
ADDITIONAL TRAINING SUPPORT
OVERVIEW OF PROGRAM
CORE TEAM
Introduction to LID
for Inspection &
Maintenance Staff
INTRODUCTORY
INTERMEDIATE
ADVANCED
Intermediate LID
Design: Rainwater
Collection Systems &
Vegetated Roofs
Intermediate LID
Topics: NPDES Phase
I & II Requirements
Intermediate
LID Design:
Permeable Pavement
Intermediate
LID Design:
Hydrologic Modeling
Advanced Topics in
LID Design:
Bioretention
Advanced Topics in
LID Design:
Permeable Pavement
Advanced Topics in
LID Design:
Hydrologic Modeling
Advanced Topics in
LID Design: Site
Assessment,
Planning & Layout
Advanced Topics in
LID Design: Rainwater
Collection Systems &
Vegetated Roofs
Advanced Topics in LID
Design: Bioretention
Media and Compost
Amended Soils
OVERVIEW OF PROGRAM
Advanced Topics for
Longâ€term LID
Operations:
Bioretention
Intermediate
LID Design:
Bioretention
Advanced Topics for
Longâ€term LID
Operations:
Permeable Pavement
Intermediate LID
Design: Site
Assessment, Planning
& Layout
Introduction to LID
for Inspection &
Maintenance Staff
INTRODUCTORY
INTERMEDIATE
ADVANCED
Intermediate LID
Design: Rainwater
Collection Systems &
Vegetated Roofs
Intermediate LID
Topics: NPDES Phase
I & II Requirements
Intermediate
LID Design:
Permeable Pavement
Intermediate
LID Design:
Hydrologic Modeling
Advanced Topics in
LID Design:
Bioretention
Advanced Topics in
LID Design:
Permeable Pavement
Advanced Topics in
LID Design:
Hydrologic Modeling
Advanced Topics in
LID Design: Site
Assessment,
Planning & Layout
Advanced Topics in
LID Design: Rainwater
Collection Systems &
Vegetated Roofs
Advanced Topics in LID
Design: Bioretention
Media and Compost
Amended Soils
OVERVIEW OF PROGRAM
Advanced Topics for
Longâ€term LID
Operations:
Bioretention
Intermediate
LID Design:
Bioretention
Advanced Topics for
Longâ€term LID
Operations:
Permeable Pavement
Intermediate LID
Design: Site
Assessment, Planning
& Layout
Training Program
Statewide LID
ADVANCED TOPICS FOR LONG-TERM
LID OPERATIONS: BIORETENTION
LEARNING OBJECTIVES
Gain an understanding of the structure and function of
bioretention components
Develop an inâ€depth understanding of inspection
activities to track and guide longâ€term facility
maintenance
Know the requirements for primary preventative and
intensive maintenance of bioretention facilities
Understand how to adaptively manage bioretention
facilities by tracking trends in facility conditions and
outcomes of maintenance activities
LOGISTICS
SCHEDULE
• 8â€hour training
• Lunch is provided
• Site visits/field exercises in the
afternoon
OTHER LOGISTICS
• Restrooms
• Turn off cell phones
• Sign in and sign out
introduction
AGENDA
bioretention O&M
plants
O&M costs
wrap up
administrative tools
23456
introduction
123456
TOPICS
INTRODUCTION
Intro to LID
NPDES Permit
LID O&M Overview
LOW IMPACT DEVELOPMENT (LID):
Stormwater Management Strategy
INTRODUCTION
• Site design & planning
techniques emphasizing
conservation
• Use of smallâ€scale engineered
controls to closely mimic preâ€
development hydrologic
processes
LID: Principles
preâ€developed forest vs. developed condition
INTRODUCTION
2012 LID Technical Guidance Manual for Puget Sound
LID: Smallâ€Scale Engineering Controls
INTRODUCTION
• Infiltration
• Filtration
• Storage
• Evaporation
• Transpiration
Synonyms for LID BMPs:
Green Stormwater Infrastructure (GSI), Integrated Management Practices (IMPs), and On-Site Stormwater
Management BMPs
Replace Preâ€developed
Hydrologic Functions
TOPICS
INTRODUCTION
Intro to LID
NPDES Permit
LID O&M Overview
NPDES PERMIT REQUIREMENTS
INTRODUCTION
National Pollutant Discharge Elimination System (NPDES) Municipal Stormwater
Permits
Municipal Stormwater Permittees in Washington State
Phase I Permittees
Western Washington Phase
II Permittees
Eastern Washington Phase II
Permittees
Seattle
Tacoma
Clark County
King County
Pierce County
Snohomish County
82 Cities
5 Counties
18 Cities
5 Counties
Secondary Permittees: Approximately 45; such as ports and universities
To see a listing of permittees visit
http://www.ecy.wa.gov/programs/wq/stormwater/municipal/MuniStrmWtrPermList.html
NPDES PERMIT REQUIREMENTS:
Requirements Vary By Permittee
INTRODUCTION
• Phase II requirements are somewhat less extensive
• Secondary permittee requirements vary
Timeline for updating maintenance standards
Phase I
Per Section S5.C.9.a of
the Phase I Permit
Phase II
June
2014
June 30,
2015
Dec. 31,
2016
June 30,
2017
June 30,
2018
Most
Permits
Lewis Co. and
Cowlitz Co.
City of
Aberdeen
Per Section S5.C.5.a of the Phase I Permit
NPDES PERMIT REQUIREMENTS:
Requirements Vary By BMP Classification
INTRODUCTION
• Onâ€site Stormwater
Management BMPs
• Stormwater Treatment
and Flow Control
BMPs/Facilities
NPDES PERMIT REQUIREMENTS: Minimum
Requirements (MRs)
INTRODUCTION
Preparation of Stormwater
Site Plans
Construction SWPPP
Source Control
Preserve natural Drainage
Onâ€Site Stormwater
management
Runâ€off Treatment
Flow Control
Wetlands Protection
O&M
NPDES PERMIT REQUIREMENTS: Minimum
Requirements (MRs)
INTRODUCTION
Curtis Hinman
Lotus Springs
• MR #2 – Construction Stormwater
Pollution Prevention Plan (SWPPP)
• Protect LID BMPs from sediment and
compaction
• MR #5 – Onâ€site Stormwater
Management
• Infiltrate, disperse, and retain runoff
onâ€site to the extent feasible
NPDES PERMIT REQUIREMENTS: Minimum
Requirements (MRs)
INTRODUCTION
• MR #6 – Runoff Treatment
• Water quality treatment for
pollutionâ€generating areas
• MR #7 – Flow Control
• Control of flow peaks and flow
durations
• MR #9 – O&M
• Require an O&M manual for
proposed stormwater facilities
and BMPs
NPDES PERMIT REQUIREMENTS: Onâ€site
Stormwater Management BMPs
INTRODUCTION
• Used to help meet MR #5
• May be used to help meet MR #6
and/or MR #7
• “Onâ€site Stormwater Management
BMPsâ€= LID BMPs
NPDES PERMIT REQUIREMENTS: Onâ€site
Stormwater Management BMPs
INTRODUCTION
• Includes the following LID BMPs:
Rain Gardens (BMP T5.14A)
Bioretention (BMP T5.14B)
Permeable Pavement (BMP T5.15)
Vegetated Roofs (BMP T5.17)
Downspout Full Infiltration (BMP T5.10A)
Downspout Dispersion (BMP T5.10B)
Concentrated Flow Dispersion (BMP T5.11)
Sheet Flow Dispersion (BMP T5.12)
Compostâ€amended soils (BMP T5.13)
SR 231 – Aimee S. Navickis-Brasch
NPDES PERMIT REQUIREMENTS: Treatment
and Flow Control BMPs/Facilities
LID O&M OVERVIEW
• Subset of Onâ€site Stormwater Management BMPs
• Used to meet MR #6 or MR #7
• May also be used to meet MR #5
• Includes the following BMPs:
Bioretention (BMP T5.14B)
Permeable Pavement (BMP T5.15)
Vegetated Roofs (BMP T5.17)
Detention facilities
Standard infiltration facilities
Treatment BMPs/facilities
TOPICS
INTRODUCTION
Intro to LID
NPDES Permit
LID O&M Overview
NPDES PERMIT LID O&M REQUIREMENTS:
O&M Standards
INTRODUCTION
Requirement
Onâ€site SW
Management
BMPs
SW Treatment & Flow
Control BMPs/Facilities (MR
#6 and/or MR #7)
Implement maintenance standards
Adopt or update ordinance or other
enforceable documents
Implement practices, policies, &
procedures to reduce stormwater
impacts associated with runoff
NPDES PERMIT LID O&M REQUIREMENTS:
Plan Review
INTRODUCTION
Requirement
Onâ€site SW
Management
BMPs
SW Treatment & Flow
Control BMPs/Facilities (MR
#6 and/or MR #7)
Verify maintenance plan completed &
O&M responsibility assigned
Verify submission of maintenance
instructions
Verify that O&M manual is complete
Review and approve declaration of
covenant (including design details,
figures and maintenance instructions)
and grant of easement
NPDES PERMIT LID O&M REQUIREMENTS:
Inspection
INTRODUCTION
Requirement
Onâ€site SW
Management
BMPs
SW Treatment & Flow
Control BMPs/Facilities (MR
#6 and/or MR #7)
Legal authority to inspect private
stormwater facilities and enforce
maintenance standards
Conduct postâ€construction
inspections to ensure proper
installation
NPDES PERMIT LID O&M REQUIREMENTS:
Inspection (continued)
INTRODUCTION
Requirement
Onâ€site SW
Management
BMPs
SW Treatment & Flow
Control BMPs/Facilities (MR
#6 and/or MR #7)
Conduct inspections during
construction in new residential
developments*
Conduct ongoing annual inspections
Perform spot checks for potentially
damaged BMPs owned/operated by
Permittee after major storm events
*Every 6 months until 90% of the lots are constructed or when construction is
stopped and the site is fully stabilized
NPDES PERMIT LID O&M REQUIREMENTS:
Enforcement
INTRODUCTION
Requirement
Onâ€site SW
Management
BMPs
SW Treatment & Flow
Control BMPs/Facilities (MR
#6 and/or MR #7)
Enforce compliance with
maintenance standards, as needed,
based on inspection
NPDES PERMIT LID O&M REQUIREMENTS:
Training
INTRODUCTION
Requirement
Onâ€site SW
Management
BMPs
SW Treatment & Flow
Control BMPs/Facilities (MR
#6 and/or MR #7)
Train staff involved in plan review,
permitting, construction site
inspections, & enforcement
Implement an ongoing training
program for employees who have
primary O&M job functions that may
impact SW quality
NPDES PERMIT LID O&M REQUIREMENTS:
Record Keeping
INTRODUCTION
Requirement
Onâ€site SW
Management
BMPs
SW Treatment & Flow
Control BMPs/Facilities (MR
#6 and/or MR #7)
Keep records of inspections and
enforcement actions (e.g., inspection
reports, notices of violations)
NPDES PERMIT LID O&M REQUIREMENTS:
Mapping
INTRODUCTION
Requirement
Onâ€site SW
Management
BMPs
SW Treatment & Flow
Control BMPs/Facilities
(MR #6 and/or MR #7)
Scale drawing of the lot(s) and
public ROW that show BMP
locations
Map BMPs owned/operated by
Permittee
Map connections between BMPs
and tributary conveyances*
*Phase I Only
LID O&M GUIDANCE DOCUMENT: Objectives
INTRODUCTION
• Support permittees in implementing
LID maintenance programs
• Provide specific O&M guidance so
permittees can create maintenance
standards that preserve facility
function
• Note: Jurisdictions may want to tailor
the tables in the O&M guidance
document to address varying levelsâ€
ofâ€service
Drena Donofrio
LID O&M GUIDANCE DOCUMENT:
Development
INTRODUCTION
• Two advisory committees
• LID Maintenance Advisory
Committee
• LID Maintenance Administrative
Issues Advisory Committee
• Best available information
• Advisory committee input
• Literature review
• Targeted surveys sent to
jurisdictions, contractors/
landscapers, and vendors
• Guidance will evolve over time
LID O&M GUIDANCE DOCUMENT: Content
INTRODUCTION
• Summary of NPDES Permit Requirements
• Maintaining LID BMPs
• Bioretention facilities
• Rain gardens
• Permeable pavement
• Vegetated roofs
• Programmatic & Administrative Guidance
• Downspout infiltration systems
• Downspout, sheet flow, and conc. dispersion
systems
• Compost amended soils
SPU
LID O&M GUIDANCE DOCUMENT: Content
INTRODUCTION
• BMP description
• How water moves through facility
• Key maintenance considerations to
ensure facility function
• Function by BMP component
• Key maintenance by BMP
component
• Key operations to preserve facility
function
Drena Donofrio
LID O&M GUIDANCE DOCUMENT:
Maintenance Standard and Procedures
INTRODUCTION
LID O&M GUIDANCE DOCUMENT:
Equipment and Materials List
INTRODUCTION
LID O&M GUIDANCE DOCUMENT:
Skills and Staffing
INTRODUCTION
• List of general skills required
• List of additional specialized
skills
• Staffing survey estimates (e.g.,
crew hours per facility, per
linear foot, or per square foot)
bioretention O&M
23456
• Definition and Types
• Components
• How the facility works
• Bioretention vs. rain gardens
• Maintenance standards & procedures
by component
• Equipment and materials
• Skills
OVERVIEW
BIORETENTION O&M
SPU
• Shallow landscaped depressions that
receive stormwater from small
contributing areas
• Small scale, dispersed facilities
• Types:
• Bioretention cells
• Bioretention swales
• Infiltration planters
• Flowâ€through planters
DEFINITION AND TYPES
BIORETENTION O&M
SPU
• Flow Entrance
• Preâ€Settling
• Ponding Area
• Bioretention Soil
• Mulch/Compost
• Vegetation
• Filter Fabric (?)
• Liner (optional)
• Underdrain (optional)
• Overflow
COMPONENTS
BIORETENTION O&M
Eastern WA LID Manual
2009 Clean Water Services LIDA Handbook
HOW THE FACILITY WORKS
BIORETENTION O&M
Bioretention Cell
• Water enters facility
• Ponds
• Infiltrates through
bioretention soil/ gravel
bed
• Infiltrates into underlying
soil
• Ponded water exceeding
max. depth overflows
HOW THE FACILITY WORKS
BIORETENTION O&M
Bioretention Planter
• Water enters facility
• Ponds
• Infiltrates through
bioretention
soil/gravel bed
• Infiltrates into
underlying soil
• Ponded water
exceeding max. depth
overflows
2009 Clean Water Services LIDA Handbook
• Water enters facility
• Ponds
• Infiltrates through
bioretention soil/ gravel
bed
• Infiltrates into
underlying soil
• Ponded water
exceeding max. depth
overflows
• Underdrain collects
water in gravel layer
and routes to overflow
HOW THE FACILITY WORKS
BIORETENTION O&M
Bioretention Planter
2009 Clean Water Services LIDA Handbook
BIORETENTION VS RAIN GARDENS
BIORETENTION O&M
• Bioretention:
• Often includes surface and subsurface
infrastructure
• Designed soil mix
• Meets requirements for MR #6 and #7 and
required for MR #5 if MR #1â€9 required
• Rain gardens
• Usually do not include underâ€drains
• May use less restrictive soil mix guidelines
(e.g., existing soil augmented with compost
and sand)
• Meets MR #5 requirements.
• Inlets
• Ponding area
• Check dams/weirs
• Bioretention soil
• Outlets
• Underdrains
• Mulch
Maintenance Standards & Procedures By
Component
BIORETENTION O&M
Siskyou Street, Portland
INLETS: Types
BIORETENTION O&M
Sheet flow from sidewalk and
roadway
Sheet flow from parking lot
INLETS: Types
BIORETENTION O&M
Curb cut
Curb cut with grate
INLETS: Types
BIORETENTION O&M
Trench drain from roadway
Trench drain from upslope BMP
INLETS: Types
BIORETENTION O&M
Piped inlet from upslope BMP
Piped inlet from roadway/parking lot
• Stormwater must freely
enter facility (no
obstructions)
• Water entering facility
should not cause erosion
INLETS: Maintenance Considerations
BIORETENTION O&M
12th Avenue, Portland
INLETS: Maintenance
BIORETENTION O&M
• Maintain erosion control at concentrated flow inlets
(e.g., rock pad)
• Ensure pipe is not damaged or clogged
Trench drain
Piped flow
Curb cut
INLETS: Maintenance
BIORETENTION O&M
• Remove accumulated…
Trifold Concrete Washout Brochure (Spanish)
0
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
Tire Dunker Wastewater: Inspection and Pollution Prevention Presentation
April Hardy February 2026
TireDunker
Wastewater:
Inspection Findings
and Pollution
Prevention
Outline
1.Sitemaps and Inspections
2.Tire Dunker Water Disposal Practices
3.Violations Identified
4.Required Corrective Actions
5.Key Inspection Focus Areas
6.Recommended Next Steps
7.Follow-up Inspection Findings
8.Questions and Discussion
Sitemaps and Inspections
Create a sitemap for the
inspection
The tire dunker was
located next to CB #3
The connection of CB #4
was suspected to be
connected to the sewer,
but records did not verify
this
Dye testing was performed in both CB #3 and #4 using two
different colored dyes
(Example Civil Plan)
Tire Dunker Water
Disposal Practices
Inspections indicate tire dunker water is
commonly discharged to stormwater
Staff are often unaware of proper disposal
requirements
The Dept. of Ecology considers this a
“processed wastewater”
According to the WA State Industrial
Stormwater General Permit (ISGP)
The Permittee must not allow this process
wastewater to discharge to ground, comingle with
stormwater, or enter storm drains; and must collect in
a tank for off-site disposal, or discharge it to a
sanitary sewer, with written approval from the local
sewage authority.” – (S3.B.4.i.7)
Violations
Identified
Illicit discharge of tire dunker water that may
contain oils, metals, and other pollutants like
6PPD
Illicit discharge of tire wash water containing
soap
In this case, an illicit connection to the storm
drains was identified in the dye testing
investigation
Infrequent storm drainage system maintenance
and cleaning
which allows pollutants and sediment to build
up and increases the risk of contaminated
runoff leaving the site and entering surface
waters
Required Corrective
Actions
Inspect and clean the storm drainage
system to address excessive sediment
buildup
Eliminate discharge of tire dunker process
wastewater to the storm drainage system
Eliminate discharge of tire wash water and
soaps to the storm drainage system
Eliminate the illicit discharge by properly
rerouting the two covertly connected drains to
the sanitary sewer system
Install an oil/water separator for appropriate
pretreatment
7
Key Inspection Focus Areas
Key points for effective evaluations
Structural & Operational
Practice
Inform businesses that
discharging tire dunker
water is prohibited.
Correct the illicit connection
by connecting it to the local
sewer or paying for off-site
disposal.
Treatment Systems
The presence and
condition of oil/water
separators are critical;
they must be regularly
maintained and functional
for effective pretreatment.
Employee Training
Providing and
disseminating proper
disposal guidance and
BMPs to staff is key to
protecting stormwater.
8
Next Steps
Ensuring Compliance and Protecting Water
To protect water quality, it is essential to implement thorough inspections, fostering
education and technical support to achieve compliance with regulations, and promote
environmental stewardship within local businesses.
Send a Formal Letter
Inspection report
Cite code violations
Outline required action items
Timeline to complete
Next steps to come into compliance
Follow-up inspection to ensure
compliance
Coordinate with Applicable Internal Departments
Verify if permitting will be needed
Connect the business w/applicable
permitting department staff
Ensure clear understanding (processed
wastewater must not go into storm drains)
Follow-up
Inspection
The coalescing plate separator was cleaned
Three CBs still had significant sediment,
indicating they were not cleaned
Contacting and communicating with the
contractor hired took several days
The company did come back to clean the
remaining three CBs that were missed
Follow-up
Inspection
An illicit discharge was observed on-site
No cleanup efforts had been made by staff
Assistant Manager was informed that cleanup
is required
A follow-up letter outlining the violation and
corrective action required was sent to the
business
Ensuring compliance protects our
environment
Questions and
Discussion
