The Washington Stormwater Center provides training, technical assistance, and other resources for stormwater management. Visit our channel and website for more information.–www.wastormwatercenter.org
Document Author: Washington Stormwater Center
New Sampling Requirements in 2025 ISGP
In this video, we dive into the permit to discuss new sampling requirements implemented in the 2025 Industrial Stormwater General Permit and address common questions that have come up regarding these changes. –Helpful links:–For more information see our QA Sheet: https://www.wastormwatercenter.org/2025-isgp-qa-sheet/–For assistance in finding a lab visit Ecology’s lab search: https://apps.ecology.wa.gov/laboratorysearch/–Find full permit documents here: https://ecology.wa.gov/regulations-permits/permits-certifications/stormwater-general-permits/industrial-stormwater-permit
Sample Handling
The Washington Stormwater Center provides training, technical assistance, and other resources for stormwater management. Visit our channel and website for more information.–www.wastormwatercenter.org
Outlet Pipe Sampling
The Washington Stormwater Center provides training, technical assistance, and other resources for stormwater management. Visit our channel and website for more information.–www.wastormwatercenter.org
Catch Basin Sampling
The Washington Stormwater Center provides training, technical assistance, and other resources for stormwater management. Visit our channel and website for more information.–www.wastormwatercenter.org
Sheetflow Sampling
The Washington Stormwater Center provides training, technical assistance, and other resources for stormwater management. Visit our channel and website for more information.–www.wastormwatercenter.org
pH Sampling
The Washington Stormwater Center provides training, technical assistance, and other resources for stormwater management. Visit our channel and website for more information.–www.wastormwatercenter.org
Turbidity Sampling
The Washington Stormwater Center provides training, technical assistance, and other resources for stormwater management. Visit our channel and website for more information.–www.wastormwatercenter.org
Industrial Stormwater Inspections
Presenter: Cody Ennis–Cody Ennis, Industrial Inspector for the Department of Ecology, will be sharing insights from the field pertaining to the industrial stormwater general permit. Participants will gain a clearer understanding of how inspections are conducted, what inspectors look for, and how proactive stormwater management can improve both compliance and environmental outcomes.
ISGP Legal Discussion
The Washington Stormwater Center hosts James Tupper from Marten Law to provide his perspective on the 2025 re-issuance of the Industrial Stormwater General Permit. James has 30 years of experience as an environmental attorney working with Industrial and Municipal NPDES permittees. James provides a unique perspective on the challenges permittees can expect from the upcoming ISGP.
