Updated Oregon 1200-Z Stormwater Permit: Key Compliance Actions Before the November 30th Deadline
The November 30, 2026, deadline is rapidly approaching for Oregon 1200-Z permittees to submit an updated Stormwater Pollution Control Plan (SWPCP) and Department of Environmental Quality (DEQ) SWPCP Checklist. Facilities should review their new permit assignment letters to confirm assigned monitoring requirements, identify any new impaired-water pollutants, and assess whether operational, monitoring, and documentation changes are necessary to comply with the renewed permit.
Highest-Priority Updates
Permit assignment letters should be reviewed immediately. These letters help facilities identify monitoring changes, including whether impaired water pollutants apply. Facilities should also notify their laboratory of any monitoring changes and confirm the correct sample bottles are available.
SWPCPs must be updated & submitted. Updates should address new permit requirements, assignment-letter changes, monitoring obligations, visual observation procedures, training records, and any recent site changes.
Training requirements are broader. Facilities should confirm that personnel responsible for best management practices (BMPs), inspections, spill response, sampling, reporting, and corrective actions are trained and that training records are complete. Training must also occur within 60 days of significant operational or site changes.
Visual observations must be documented separately. Facilities should update inspection forms or SWPCP templates as needed, so discharge event visual observations are tracked separately from monthly inspections.
Other Notable Changes
Tier 1 source-control expectations are clearer. Tier 1 investigations should evaluate source control or source removal rather than relying only on downstream treatment or operational controls.
Tier 2 corrective action requirements have been clarified. Corrective actions must address the drainage area associated with the triggering monitoring point and include operations and maintenance specifications. Complete revised SWPCPs are not due until the Tier 2 corrective action response is implemented.
Professional certification may be required for certain Tier 2 measures. Oregon-registered professional engineers must design and stamp SWPCP portions addressing Tier 2 control or treatment measures, and Tier 2 mass reduction waiver measures must be certified by a professional engineer or certified engineering geologist.
Electronic submittals continue to expand. Facilities should be prepared to manage permit-related reporting and correspondence through DEQ Online. Note: DEQ agents, such as Clean Water Services, may still require PDF or hardcopy submittals.
What Facilities Should Do Now
Review your permit assignment letter and confirm whether any monitoring changes or impaired water pollutants apply.
Coordinate with your analytical laboratory so sampling plans, bottle orders, and reporting expectations match the new requirements.
Update the SWPCP, including forms for separate discharge event visual observations and any new or changed site conditions.
Complete the 2026 SWPCP Checklist that accompanies the SWPCP and is used to verify that the SWPCP addresses new permit requirements.
Refresh training procedures and records so required staff are trained on BMPs, inspections, sampling, spill response, reporting, and corrective actions.
Revisit prior Tier 1 and Tier 2 reports and confirm BMPs are ready before wet-weather sampling begins.
Reach out to ALG
Contact Christine Wong (cwong@algcorp.com) if you need assistance with reviewing your permit assignment letter and updating your SWPCP to comply with new permit requirements.
