Industrial Stormwater General Permit

Stormwater can pick up pollution from factories and businesses. Those contaminants are carried into waterways and harm fish and other aquatic life. The Industrial Stormwater General Permit (ISGP) helps industrial facilities comply with federal regulations that reduce pollution. We require most industrial sites in Washington to monitor, measure, and reduce stormwater pollution leaving their site.

The current permit went into effect Jan. 2, 2015, and expires Dec. 31, 2019.

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Current permit and related documents

Current permit (effective Jan. 2, 2015)
- Appendix 3 — SWPPP Certification Form
- Appendix 4 — Existing discharges to impaired waters. Choose "Industrial Stormwater 303(d)" from the Report Details drop-down.
- Appendix 5 — Dischargers subject to TMDL requirements
Fact sheet
Response to comments

Permit reissuance — 2019

We accepted comments on draft permit documents from May 1, 2019, to June 29, 2019. We held six public workshops and hearings across the state, including an online webinar. During the workshops, we explained the proposed changes to the permit and answered questions. The public hearings provided the opportunity for the public to give formal comments on the draft permit.

We will publish a Response to Comments as an appendix to the fact sheet to address comments submitted during the public comment period.

You may view comments received on the draft permit.

Timeline

Spring 2019: Formal public comment period on the draft permit
Nov. 2019: Decision on permit issuance

Previous permit documents

Permit (Expired Jan. 1, 2015)
Fact sheet
- Addendum to the Fact sheet: Response to comments

Permit applications and forms

Contact information

For Permittees in the following cities and counties:

Adams, Asotin, Benton, Chelan, Columbia, Douglas, Ferry, Franklin, Garfield, Grant, Island, King (except for the cities of Seattle and Kent), Kittitas, Klickitat, Lincoln, Okanogan, Pend Oreille, San Juan, Skagit, Snohomish, Spokane, Stevens, Walla Walla, Whatcom, Whitman, or Yakima County

Noel Tamboer
Permit Administrator
noel.tamboer@ecy.wa.gov
360-407-7229

City of Seattle, City of Kent; Kitsap, Pierce, or Thurston County

Josh Klimek
Permit Administrator
josh.klimek@ecy.wa.gov
360-407-7451

Clallam, Clark, Cowlitz, Grays Harbor, Jefferson, Lewis, Mason, Pacific, Skamania, or Wahkiakum County

Joyce Smith
Permit Administrator
joyce.smith@ecy.wa.gov
360-407-6858

Industrial Stormwater General Permit Questions

Travis Porter
Permit Writer
travis.porter@ecy.wa.gov
360-407-6127