Oregon SWPPP inspection requirements
- Rain trigger
- 0.5″ storm event
- Post-rain deadline
- Within 24 hours
- Routine inspections
- Every 7 or 14 days
- Permit
- 1200-C Construction Stormwater General Permit
- Agency
- Oregon Department of Environmental Quality (OR DEQ)
Verify against your permit. These values reflect the most common reading of Oregon's program; permits change and projects vary. The official permit text from OR DEQ controls.
How Oregon handles construction stormwater
Construction sites in Oregon disturbing one acre or more need coverage under the 1200-C Construction Stormwater General Permit, administered by Oregon Department of Environmental Quality.
Inspector qualifications
A qualified person designated by the operator. Check the current state permit for certification requirements.
Official sources
Common questions
What triggers a SWPPP inspection in Oregon?
Under the 1200-C Construction Stormwater General Permit, a storm event of 0.5 inches or more triggers a post-storm inspection, generally due within 24 hours (non-work days typically extend to the next work day; check your permit). Routine inspections run every 7 or 14 days.
Who can perform SWPPP inspections in Oregon?
A qualified person designated by the operator. Check the current state permit for certification requirements.
Who administers the construction stormwater program in Oregon?
Oregon Department of Environmental Quality (OR DEQ) administers the NPDES construction stormwater program in Oregon under the 1200-C Construction Stormwater General Permit.
What are the penalties for SWPPP violations in Oregon?
Federal Clean Water Act civil penalties can reach $68,445 per day per violation, and OR DEQ can issue administrative orders and state penalties on top. Missing rain-triggered inspections is among the most commonly cited violations in stormwater audits.
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