Public Comment Period -- Draft 2026 WSDOT MS4 General Permit

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Comment From: City of Renton (Kristina Lowthian)

8/21/26 @ 6:31 PM
Thank you for the opportunity to provide comments on the draft Washington Department of Transportation Municipal Stormwater General Permit.

Permit section S1.B.2 seems to exclude WSDOT responsibility for their portion of the MS4 described in S1.B.1 ...↓
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Comment From: Washington State DOT (Craig Schoenberg)

8/21/26 @ 2:44 PM
Please find comments on the 2026 DRAFT Highway Runoff Manual in the attached comment form. These comments are regarding the Glossary of Terms, specifically for the separated bicycle facility and separated pedestrian facility.
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Comment From: Muckleshoot Indian Tribe (Tammie Wilson)

8/21/26 @ 2:06 PM
1. Appendix 3 - Applicable TMDL Requirements
Ensure TMDL's are implemented during the WSDOT permit renewal process. The Lower White River (LWR) pH TMDL did not describe WSDOT to implement controls for nutrients "as needed" in the next permit renewal....↓
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Comment From: King County Water and Land Res... (Zack Holt)

8/21/26 @ 1:02 PM
Please refer to attached letter for comments. Thank you for the opportunity to provide comments.
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Comment From: Washington State Department of... (Garrett Starks)

8/21/26 @ 11:06 AM
Thank you for the opportunity to comment. The majority of WSDOT's comments on the draft Permit address typographical errors and opportunities to improve clarity and consistency throughout the document, as well as several comments that address permit ...↓
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Comment From: Detra Segar

8/13/26 @ 3:39 PM
I am not qualified to have technical comments about the project. As a resident of Eastlake, where highway storm water run off is prevalent and where we have just undergone a significant upgrade to the storm water system, I see the importance of keep...↓
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Comment From: Trace Johnson

8/11/26 @ 3:34 PM
I am concerned that a significant number of businesses are left out of the source control for existing development programs required for other MS4 permittees. Many businesses line WSDOT roads that have WSDOT MS4 infrastructure. These businesses are n...↓
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Comment From: WSDOT (Mikkel Lamay)

8/06/26 @ 7:06 AM
Section S5.C.5.b, on Page 12, outlines application for technical standards and when current project are obligated to use the 2019 HRM vs 2026 HRM. WSDOT's larger projects often have significant durations between design approval and when the project ...↓
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Comment From: Bonnie Blessing

8/05/26 @ 12:50 PM
Hello
Our freeway crosses alot of spotted frog drainages that I believe include designated critical habitat or very important habitats. For instance, DCH for this species is just downstream of I-5 near Tumwater. But upstream is a mitigation site for...↓
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Comment From: City of Seattle (Jessica Huybregts)

8/04/26 @ 1:16 PM
The City of Seattle appreciates the opportunity to provide comments on the draft 2026 WSDOT MS4 Permit. Please reach out with questions.


Topic: Responsibilities of Permittee
Permit condition: S3
Comment: Continued active WSDOT involvement in Lower ...↓
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Comment From: Anonymous Anonymous

7/17/26 @ 7:59 AM
Section S5.C.5.b.ii (Page 12): There appears to be a logical error in this section. WSDOT has a project that will achieve Design Approval prior to December 7, 2026 but the ad date is after 2028. The 2026 HRM will not be released until an undetermin...↓
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Comment From: Anonymous Anonymous

7/06/26 @ 8:00 AM
Many DOT roads cross streams and wetlands and frequently flooded areas, some of which have been routed into ditches. Many of these host special status amphibians that will go as far as 3 km from their breeding sites, so check to see if they are known...↓
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