Construction Stormwater General Permit

Submitting an application
We have transitioned to a modern work environment. To expedite application processing, 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.
Stormwater runoff from construction sites can carry muddy water, debris, and chemicals into local waterways. Sediments, chemicals, and debris can harm aquatic life and reduce water quality.
We require regulated construction sites to get coverage under the Construction Stormwater General Permit (CSWGP). Following the requirements in this permit helps control and reduce water pollution. If water on your construction site is contaminated see this guidance for contaminated water on construction sites.
Operators of regulated construction sites are required to:
- Develop stormwater pollution-prevention plans.
- Implement sediment, erosion, and pollution-prevention control measures.
- Obtain coverage under this permit.
The current permit went into effect on Jan. 1, 2021, and expires on Dec. 31, 2025.
To receive updates about this permit, sign up for our email list.
Applications and forms
I've got permit coverage. Now what?
Check out our eCoverage packet for more information about your requirements.
Need help implementing the permit?
What do I do with contaminated water?
See contaminated water on construction sites for guidance.
Not finding what you're looking for?
See our regional contacts page to help find a person to answer to your questions.
Related links
Contact information
For Permittees in the following cities and counties:
Grant, Island, King, Okanogan, San Juan
Stacey Britton
Permit Administrator
360-764-3727
stacey.britton@ecy.wa.gov
Adams, Asotin, Benton, Columbia, Ferry, Franklin, Garfield, Klickitat, Lincoln, Pend Oreille, Snohomish, Spokane, Stevens, Thurston, Walla Walla, Whitman
Anna Duron
Permit Administrator
360-764-3960
anna.duron@ecy.wa.gov
Clark, Cowlitz, Grays Harbor, Lewis, Mason, Pacific, Skamania, Wahkiakum
Joyce Smith
Permit Administrator
360-628-2138
joyce.smith@ecy.wa.gov
Pierce, Skagit, Whatcom
Melinda Wilson
Permit Administrator
360-870-8290
melinda.wilson@ecy.wa.gov
Chelan, Clallam, Douglas, Jefferson, Kitsap, Kittitas, Yakima
Alyssa Brewer
Permit Administrator
564-669-4922
alyssa.brewer@ecy.wa.gov
CNE and Enforcement Coordinator:
Clay Keown
General Permit Compliance Specialist
360-480-3353
clay.keown@ecy.wa.gov
Construction Stormwater General Permit Questions:
Kendra Henderson
General Permit Writer
360-870-6757
kendra.henderson@ecy.wa.gov