Maine SWPPP inspection requirements
- Rain trigger
- 0.5″ storm event
- Post-rain deadline
- Within 24 hours
- Routine inspections
- Every 7 or 14 days
- Permit
- Maine Construction General Permit
- Agency
- Maine Department of Environmental Protection (Maine DEP)
Verify against your permit. These values reflect the most common reading of Maine's program; permits change and projects vary. The official permit text from Maine DEP controls.
How Maine handles construction stormwater
Construction sites in Maine disturbing one acre or more need coverage under the Maine Construction General Permit, administered by Maine Department of Environmental Protection.
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 Maine?
Under the Maine Construction 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 Maine?
A qualified person designated by the operator. Check the current state permit for certification requirements.
Who administers the construction stormwater program in Maine?
Maine Department of Environmental Protection (Maine DEP) administers the NPDES construction stormwater program in Maine under the Maine Construction General Permit.
What are the penalties for SWPPP violations in Maine?
Federal Clean Water Act civil penalties can reach $68,445 per day per violation, and Maine DEP 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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