This page is a practical explainer, not an official notice or compliance determination. If you have a property-specific letter, follow its instructions and ask your issuing agency when unsure.
Start with the specific letter
Portland Environmental Services tells owners who receive inspection letters to address the corrective actions and routine maintenance described in the letter according to the property’s operations-and-maintenance (O&M) plan.
Your letter—not this page—defines the actual findings, dates and follow-up for your property. Questions about an individual inspection should go to the City inspector named on the letter.
- Find the issuing agency, date and inspector contact.
- Highlight each corrective action and any explicit deadline.
- Note whether photographs, documentation or a follow-up inspection are requested.
Find the operations-and-maintenance plan
An O&M plan describes how the property’s stormwater facility should be maintained. Some plans are recorded in property records. Portland provides guidance for owners trying to identify the facility and plan.
Identify whether the notice concerns a vegetated stormwater feature, a structural/mechanical facility or both, and avoid applying general vegetation guidance to mechanical filters.
- Locate the plan or ask the City inspection team where to start.
- Match every finding to a facility on the property.
- Ask for clarification if a requirement seems inconsistent or unclear.
Examples of common findings
The City publishes maintenance thresholds for vegetated facilities. These include vegetation condition, inlet/overflow obstructions, sediment and erosion. Structural or mechanical facilities can have different, manufacturer-specific maintenance requirements.
Do not use a general threshold to disregard a stricter site-specific directive. If the notice describes repairs or design changes, verify whether a permit is required before proceeding.
- Plants, invasive species or accumulated leaves in rain gardens and swales.
- Blocked inlets, excess sediment, trash or other flow obstructions.
- Damage, erosion, or issues with structural/mechanical equipment.
Complete the work and respond correctly
If qualified assistance is needed, find a provider whose work type matches the finding. For vegetated systems you may need specialized landscape maintenance; for underground or mechanical equipment you may need a structural stormwater contractor.
Keep before-and-after photos, dated work records and invoices. Then follow the response instructions in your notice. For general inspection questions, Portland lists the Stormwater Facility Inspection Team at StormwaterFIT@portlandoregon.gov and 503-823-5313.
- Document which required actions were completed.
- Contact the inspector for confirmation of required follow-up or a re-inspection.
- Keep copies of all correspondence and evidence.
What if the notice mentions enforcement, penalties or appeals?
Treat any enforcement, fine, appeal or short response deadline as time-sensitive. This informational website does not interpret legal rights, waive deadlines or communicate with the City on your behalf.
Contact the issuing agency promptly and consider qualified professional advice when a notice has legal or enforcement consequences.
- Use the official notice contact information—not a third-party directory—to confirm time-sensitive obligations.
- Do not upload confidential material to any service unless you understand how it handles your documents.
Official sources and forms
- Portland: required maintenance after inspection and City inspector contact
- Portland: rain garden care and O&M plans
Requirements may change. Confirm deadlines, eligibility, maintenance and permit details with the responsible agency for your address.
Need help with the physical work?
Understand the requirements first. Then find publicly listed providers by facility type, and verify service area, current qualifications and insurance before hiring.