North Dakota SWPPP inspection requirements

The short version
Rain trigger
0.5″ storm event
Post-rain deadline
Within 24 hours
Routine inspections
Every 7 or 14 days
Permit
NDR10 Construction General Permit
Agency
North Dakota Department of Environmental Quality (NDDEQ)

Verify against your permit. These values reflect the most common reading of North Dakota's program; permits change and projects vary. The official permit text from NDDEQ controls.

How North Dakota handles construction stormwater

Construction sites in North Dakota disturbing one acre or more need coverage under the NDR10 Construction General Permit, administered by North Dakota 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 North Dakota?

Under the NDR10 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 North Dakota?

A qualified person designated by the operator. Check the current state permit for certification requirements.

Who administers the construction stormwater program in North Dakota?

North Dakota Department of Environmental Quality (NDDEQ) administers the NPDES construction stormwater program in North Dakota under the NDR10 Construction General Permit.

What are the penalties for SWPPP violations in North Dakota?

Federal Clean Water Act civil penalties can reach $68,445 per day per violation, and NDDEQ 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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