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Showcasing Best Management Practices for using concrete washout areas
Guidance around common spill kit contents relevant to the industrial stormwater general permit and any business or operation who may encounter spills.
Municipal stormwater news and updates from October 14th, 2025
Form sites must fill out to update their discharge point or change their sampling location
Find hundreds of best management practices for managing stormwater for applications such as municipal, industrial, construction permit compliance.
Printable permit assistance rack card with qr codes linking to permit assistance pages for the construction stormwater general permit (CSWGP)
Printable rack card with QR codes to permit assistance pages
Template for creating a Stormwater Pollution Prevention Plan as required by the ISGP. Updated for the 2025 Permit.
2020 version of the Industrial Stormwater General Permit (ISGP). This permit has since been reissued and replaced.
Presentation overview of the basics of the Industrial Stormwater General Permit
Determine if an Industrial Facility is eligible for a CNE Exemption
Blank Spill Prevention and Cleanup Plan that can be utilized for the ISGP
Use this form to submit your ISGP annual report to Ecology
Highlights all of the changes in the 2025 ISGP
Industrial Inspector shares his insights on the 2025 ISGP
