Washington State Department of Ecology


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Stormwater Discharge Permits (8 publications 2014-2026)


7
Title (link to summary)NumberDate (released or updated)
Permit Application for Coverage Under the Sand and Gravel General Permit ECY 070-31February 2026
ISGP Notice of Termination Form ECY 020-86February 2026
Construction Stormwater General Permit Modification/Update ECY 070-558January 2026
Transfer of Coverage Construction Stormwater General Permit ECY 020-87aJanuary 2026
CSWGP Notice of Termination Form ECY 020-87November 2025
Industrial Stormwater General Permit Application Form (Notice of Intent) ECY 020-84February 2025
Request for a Conditional No Exposure Exemption, Boatyard General Permit ECY 070-485August 2023
Notice of Intent (NOI) application Form for Construction Stormwater General Permit ECY 020-85December 2014

 

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