Industrial Stormwater General Permit

Early reissuance

We are reissuing the permit early, and anticipate reissuing the ISGP in late Summer 2028. For current permittees, reapplying for the permit early is important to maintain permit coverage. We will communicate this deadline and process with permittees. Please make sure the contact information in PARIS is accurate.

Please also stay tuned for information on how to engage in the permit development and reissuance process.

Stormwater can pick up pollution from factories and businesses. Those contaminants are carried into waterways and harm fish and other aquatic life. The National Pollutant Discharge Elimination System (NPDES) and State Waste Discharge permit helps industrial facilities comply with federal and state regulations that reduce pollution. We require most industrial sites in Washington to monitor, measure, and reduce stormwater pollution leaving their site. We use the federal Clean Water Act and state law (RCW 90.48.080) to regulate stormwater at industrial facilities.

The permit went into effect Jan. 1, 2025, and expires Dec. 31, 2029. We aim to reissue this permit early, in Aug. 2028.

Join our email list to receive updates about this permit.

Current permit documents

2025 Industrial Stormwater General Permit with errata (effective Jan. 1, 2025)
- Permit errata
- Appendix 3: SWPPP certification form
Fact Sheet for the draft 2025 general permit
- Appendix C: Response to Comments
Focus on: 2025 Industrial Stormwater General Permit (Dec. 2025)
Small Business Economic Impact Analysis (May 2024)
Redline version of the 2025 permit

Several parties appealed the general permit. The parties agreed to consolidate the six appeals into one. Five of the original cases are now closed as a result of the consolidation. Since then, Ecology reached a settlement agreement with industrial appellants in February 2026.

The appeals relate to the legal and technical basis of the permit, general stringency, and permit requirements and deadlines. The general permit is still in full effect. Ecology will continue to support permittees as they implement the permit.

We will post more information and any decisions made by the Pollution Control Hearings Board (PCHB) on this page. You can visit the Pollution Control Hearings Board page and use the Case Search Tool (Search term: 24-088c Puget Soundkeepers et al. vs Ecology) for up to date appeal information. The Notice of Appeal document is available via a public records request.

PCHB Case 24-088c Puget Soundkeeper Alliance et. al. v. Ecology

Early permit reissuance

Ecology has started the proces to reissue the permit and we are aiming to reissue the permit about a year and a half before it's expiration.The current permit is effective until Dec. 31, 2029. However, we anticipate reissuing the permit in late summer 2028. We are doing this for two reasons, as part of a settlement agreement from the 2025 permit appeal and as an opportunity to rebalance workload for staff administrating our two largest general permits.

railroad tracks with stacks of both covered and uncovered wooden boards — Transportation facility

Early outreach

The first step in reissuing a permit is to review the permit and ask for input from industry and interested communities. Conducting early outreach allows Ecology to gather information before writing the next draft permit. This includes hearing from industry, technical experts, government partners, Tribes, community members, and other interested parties. This early feedback helps us better understand concerns, identify potential impacts, and look for areas where the permit can improve. We are planning to hold at least one public listening session, and provide an open feedback period with an online feedback form. Because this is an early information-gathering phase, Ecology will not provide formal responses to comments submitted during this period.

Ecology will share more information about the early outreach process, including how to participate and key dates, in summer 2026. Join our email list to receive updates.

Anticipated timeline

Now: Review of the current permit and gather input from agency partners, experts, industry representatives, and interested community members.
Late summer/fall 2026: Early outreach. Hold at least one public listening session and offer an open feedback period on the current permit. Ecology will not provide formal responses to comments submitted during this period.
Early 2028: Release the official draft permit for formal public review and comment with at least one public meeting, hearing, and invitation for spoken and written comments for the official record.
Summer 2028: Make final permit reissuance decision.

Applications and forms

To apply for coverage:

Fill out the online application (Notice of Intent)
Conditional No Exposure — Eligible if there is “no exposure” of industrial materials and activities to rain, snow, snow melt, and/or runoff. Reapply for this status every five years. Apply through SecureAccess Washington (SAW).

Please scan or take a photo of all permit forms and email them to our resource mailbox at: ecyrewqianoi@ecy.wa.gov. Also, you must mail the original, signed documents to:

Water Quality Program
PO Box 47696
Olympia, WA 98504-7696

We are currently emailing all coverage documents and permit related information to the permittee on file.

If you have any questions, contact us at the email addresses below.

Contact information

Permit Administrator - by county of permit project

King (except city of Seattle)
Alyssa Brewer
564-669-4922
alyssa.brewer@ecy.wa.gov

City of Seattle, Chelan, Clallam, Douglas, Island, Jefferson, Kittitas, Pacific, San Juan, Skamania, Spokane, Whitman
Max Graham
564-200-2505
max.graham@ecy.wa.gov

Adams, Asotin, Benton, Columbia, Franklin, Garfield, Grant, Grays Harbor, Kitsap, Skagit, Thurston, Walla Walla
Jasper Sogn
360-972-6524
jasper.sogn@ecy.wa.gov

Cowlitz
Joyce Smith
360-628-2138
joyce.smith@ecy.wa.gov

Ferry, Lincoln, Mason, Okanogan, Pend Oreille, Snohomish, Stevens, Wahkiakum, Yakima
Collin Smith
564-669-9319
collin.smith @ecy.wa.gov

Clark, Lewis, Klickitat
Jen Smith
360-584-8214
Jen.smith@ecy.wa.gov

Pierce, Whatcom
Melinda Wilson
360-870-8290
melinda.wilson@ecy.wa.gov

Permit Writer

Shannon McClellan
Environmental Specialist
360-280-8370
shannon.mcclellan@ecy.wa.gov

Conditional non-exposure and enforcement coordinator

Clay Keown
General Permit Compliance Specialist
360-480-3353
clay.keown@ecy.wa.gov