South Dakota
Stormwater Pollution Prevention Plan (SWPPP)
SWPPP preparation and permit coverage for construction sites disturbing 1 acre or more, as required under the Clean Water Act.
What the work involves
Construction that disturbs 1 acre or more, or is part of a larger common plan of development that will, generally needs NPDES construction stormwater permit coverage from EPA or the state. A SWPPP describes erosion and sediment controls, pollution prevention, inspection schedules and responsible parties, and is filed with a Notice of Intent. Some states and localities require a registered engineer or certified professional to prepare it, and require periodic inspections during construction.
Local conditions we plan for
- Deep frost penetration
- Expansive clay soils (Pierre Shale)
- Riverine flooding
- Snow and wind loads
Building code: 2021 IBC/IRC adopted at the state level (ICC adoption chart, April 2026). A legislative summary reports adoption of the 2024 IBC and IRC effective July 1, 2026.
When you need it
- Disturbing 1 acre or more of land
- Smaller lot that is part of a larger subdivision or common plan
- State or local permit requires a SWPPP
- Inspector cited missing or outdated SWPPP
Frequently asked questions
How much does stormwater Pollution Prevention Plan (SWPPP) cost?
Across the US, stormwater Pollution Prevention Plan (SWPPP) usually costs $1,000 to $15,000. Estimate. No authoritative national price survey was found. Small sites are commonly a few thousand dollars or less, while large multi-phase projects cost more; inspections during construction are usually billed separately.
How long does stormwater Pollution Prevention Plan (SWPPP) take?
Plan on 1 to 3 weeks to prepare; coverage timing depends on the permitting authority from signed proposal to stamped deliverables, longer if a site visit, soil testing or a permit review cycle is involved.
Do I need a licensed PE for stormwater Pollution Prevention Plan (SWPPP)?
In most US jurisdictions, yes. When the work needs a permit, the plans, calculations or report usually must be sealed by a Professional Engineer licensed in the state where the project is located. Every deliverable we issue for permit is sealed that way.
How do I verify an engineer's license in South Dakota?
Engineers practicing in South Dakota are licensed by the South Dakota Board of Technical Professions.
Which building code applies in South Dakota?
2021 IBC/IRC adopted at the state level (ICC adoption chart, April 2026). A legislative summary reports adoption of the 2024 IBC and IRC effective July 1, 2026. Cities and counties can add local amendments, which is one reason to hire an engineer who works in your area.
What site problems do engineers see most in South Dakota?
Common issues include deep frost penetration, expansive clay soils (Pierre Shale), riverine flooding and snow and wind loads.