Puget Sound
Integration
Efforts
WSC’s cross-sector
work to align
stormwater, land use,
human health, and
scientific research.
Human Health
Integration
Facilitating human health
integration into aquatic
based strategies through
workshops, crossdisciplinary collaboration,
socializing concepts and
bridging organizational
silos.
Land & Water Use
Planning
Promote integrated land
and stormwater
approaches using
national models,
workshops and
cultivating crossdiscplinary relationships.
Research &
Leadership
Linking 6PPD-Q and
other products, with
health, and climate
issues. Leveraging
regional leadership board
roles to bridge social and
physical sciences that
center human needs in
stormwater solutions
Online Outreach
Guiding Permittees Through Change
The WSC provided essential guidance
throughout the Industrial Stormwater
General Permit (ISGP) reissuance
process, ensuring permittees
understood proposed changes and
how to remain in compliance.
20+ blog posts on key
permit components,
analysis of proposed
changes, and practical
compliance tips
Delivered updates in real
time to help permittees
prepare
5 live webinars with
over 527 total
registrants
Focused on FAQs,
technical
interpretation, and
implementation
guidance
Empowering Municipal Permittees with Targeted Support
Washington Stormwater Center:
2024 Impact at a Glance
Supporting Permittees Through ISGP
Reissuance
In 2024, the WSC simplified the industrial permit
reissuance process, delivering timely, actionable guidance
and building trust through clear communication.
Statewide Reach
Responded to 151
permittee requests in
53 jurisdictions
Permit Assistance
Support for 3
municipal permits
across the state of WA
Stormwater Guidance
Staff Training
Onboarding
Capacity Building
Regional Group Connections
New Resources to Meet Evolving
Permit Requirements
Compliance Tools
In-Person Trainings
7
2
6 Online Courses
101 Attended Multiple Sessions
193 Unique Participants
Reach & Participation
292 Total Session Attendees
13 Webinars
+ 2 In-Person Workshops
= 22 Hours of Content
Washington’s First Statewide Stormwater Awareness Week
Combined webinars, interactive in-person training, and regional expertise
Designed for stormwater professionals from across Washington State
Event Overview
WSC hosted two in-person training sessions that reached full capacity and generated active
interest. The IDDE and Small Spill Response training welcomed 65 participants, while the Source
Control Business Inspection session drew 53 attendees. Both trainings had waitlists, reflecting
strong demand for hands-on stormwater education
Training Highlights
Industrial, Construction, &
Municipal Stormwater Permits
TAPE Program
Adopt-a-Drain
Green Stormwater Infrastructure
Training Best Practices
Underground Injection Control Wells
WA Department of Transportation
Prioritization Tools
Current WSC Research Initiatives
Topics Covered
Stormwater Awareness Week
TAPE Long-Term Progress: Post GULD Maintenance Assessment
Every step of the maintenance protocol development was shaped by extensive collaboration and feedback from
stakeholders, ensuring the final product reflects the insights and needs of the stormwater community.
2019 – Increased
maintenance needs
identified
2021 – Selection of
preferred approach
2022 – Draft protocol
outline created
2023 – First draft of the
protocol completed
2024 – Final protocol
integrated and
published by Ecology
Identifying Safer
Alternatives
Understanding
Toxicity Factors
Permeable
Pavement Impacts
Research showed two antiozonant
chemicals as potential 6PPD
replacements that are safer for
coho salmon
Studies suggest that 6PPD-Q
toxicity to coho salmon is altered
by temperature and life stages
Permeable pavement reduced
6PPD-Q by nearly 70% and
retained 96% of tire particles in
experimental systems
C. Lawrence MS Research, PI Dr. J.
McIntyre
G. Foster MS Research, PI Dr. J.
McIntyre
C. Mitchell PhD Research, PI Dr. A.
Jayakaran