Louisiana SWPPP inspection requirements
- Rain trigger
- 0.5″ storm event
- Post-rain deadline
- Within 24 hours (weekends count)
- Routine inspections
- Every 7 or 14 days
- Permit
- LAR100000 / LAR200000 Construction General Permits
- Agency
- Louisiana Department of Environmental Quality (LDEQ)
How Louisiana handles construction stormwater
Construction sites in Louisiana disturbing one acre or more need coverage under the LAR100000 / LAR200000 Construction General Permits, administered by Louisiana Department of Environmental Quality. LAR100000 (5+ acres; effective October 1, 2024 – September 30, 2029) and LAR200000 (1–5 acres; effective August 25, 2023) share the same scheme: every 7 days, or every 14 days plus before anticipated storms and within 24 hours of the end of a 0.5″ storm (calendar-based — no weekend exception). Inspection reports due within 7 calendar days.
Inspector qualifications
Qualified personnel knowledgeable in erosion and sediment control principles — no certification mandated.
Official sources
Common questions
What triggers a SWPPP inspection in Louisiana?
Under the LAR100000 / LAR200000 Construction General Permits, a storm event of 0.5 inches or more triggers a post-storm inspection, within 24 hours (weekends count). Routine inspections: every 7 or 14 days.
Who can perform SWPPP inspections in Louisiana?
Qualified personnel knowledgeable in erosion and sediment control principles — no certification mandated.
Who administers the construction stormwater program in Louisiana?
Louisiana Department of Environmental Quality (LDEQ) administers the NPDES construction stormwater program in Louisiana under the LAR100000 / LAR200000 Construction General Permits.
What are the penalties for SWPPP violations in Louisiana?
Federal Clean Water Act civil penalties can reach $68,445 per day per violation, and LDEQ 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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