Western Washington 2024 Permit Reissuance Ad Hoc Process
Ad Hoc Survey Topic Results†
No.
Interested
Topic
Co-Lead
Responses†
Stormwater Management Action Planning: next steps
`Proportionality/scaling/tiering and permit obligations: should
requirements be “right-sized” to a greater extent based on
jurisdictional differences (e.g., permittee population, urban-suburban-
rural, county vs. city, etc.)?
Structural Stormwater Controls
Annual reporting: how to make it more meaningful/useful to Ecology,
Permittees, and other stakeholders
Stormwater Action Monitoring: Incorporating findings into 2024 permit
and/or Stormwater Management Manual Western Washington,
resource allocation and funding uses, etc.
Recent findings regarding 6-PPD/pre-spawn mortality
O&M: e.g., maintenance guidelines and standards, new
options/requirements such as street sweeping
Stormwater Management Manual Western Washington: e.g., Areas of
confusion, Phase I equivalency, new technologies
Education and outreach: how to improve its reach and effectiveness
Equity/Environmental Justice: How can Permit requirements more
effectively support these outcome
S4F adaptive management – Appealability of S4F3 Plans
Outfall reporting standards (mapping requirement)
†Total of 69 respondants
‡Several additional indicated a willingness to co-lead any topic where extra help is needed
Ad Hoc Survey Topic Suggestions
Category
Other Topic Suggestions
IDDE & Source
Control
Requirement
Clarify the relationship between the Permit’s IDDE and Source Control programs.
How are they the same, how are they different?
TMDL
How to seek revisions to TMDL-related obligations contain in Appendix 2.
Inspections
Required inspections of public and private stormwater facilities/BMPs and the
associated Permit compliance metric.
Stormwater
Monitoring
Clarify the relationship of the Permit’s obligations with overlapping (or related)
requirements contained in other Ecology-issued permits, such as the Construction
General Stormwater Permit (CSWGP) or the Industrial Stormwater General Permit
Western Washington 2024 Permit Reissuance Ad Hoc Process
(ISGP). What are Ecology’s expectations re: MS4 permittee oversight/assurance of
permit implementation (e.g., monitoring, reporting) by other types of permittees?
O&M Catch
Basin
Requirement
Reexamine the value of the Permit’s 2-year catch basin inspection and 6-month
maintenance deadline.
UIC
Examine and clarify the relationship of the MS4 Permit’s obligations with Ecology’s
expectations for municipalities under the UIC Rule, including with the stormwater
management plan.
BMP
The Permit’s Low Impact Development requirements, including Green Stormwater
Infrastructure.
Planning
Explore how the Permit could offer incentives for permittees who establish shared
planning priorities across jurisdictions? What form might metrics take to track
shared implementation of those priorities?
IDDE
IDDE screening for rural ditches.