Who needs an SWP2 Plan in Kansas?
Any construction project that disturbs one acre or more — or is part of a larger common plan of development reaching one acre — needs an SWP2 Plan under Kansas permit S-MCST-2208-1.
Kansas runs its own delegated stormwater program. Operators obtain coverage from KDHE under Kansas Construction Stormwater General Permit (S-MCST-2208-1), not directly from the EPA. A small subdivision, a solar pad, and a road-widening project all clear the same one-acre line.
Kansas adds requirements worth flagging early: Notice of Intent to KDHE via KEIMS; SWP2 Plan prepared under the supervision of a licensed professional or CPESC; Correct inspection deficiencies within 7 calendar days.
What the plan must contain
A Kansas SWP2 Planis the site's compliance binder — the document an inspector opens first. It documents:
- 1Site & project descriptionTotal and disturbed acreage, soils, slopes, and the sequence of construction.
- 2Receiving waters & discharge pointsWhere stormwater leaves the site and the waterbodies it reaches.
- 3Erosion & sediment control BMPsSilt fence, stabilized entrances, inlet protection, and stabilization measures.
- 4Inspection schedule & recordsDated, signed inspection logs and the corrective actions taken.
- 5Operator certificationThe SWP2 Plan is signed by the legally responsible party before work begins.
Required and conditional BMPs
| Best management practice | Category | Status |
|---|---|---|
| Perimeter silt fence / sediment barrier | Sediment control | Required |
| Stabilized construction entrance | Tracking control | Required |
| Storm drain inlet protection | Sediment control | Required |
| Soil stabilization (seeding, mulch, blankets) | Erosion control | Required |
| Concrete washout containment | Good housekeeping | Required |
| Sediment basin or trap | Sediment control | Conditional |
| Dewatering / turbidity controls | Pollution prevention | Conditional |
Filing your Notice of Intent
Submit the Notice of Intent to KDHE through KEIMS.
A Notice of Termination closes coverage once the site reaches final stabilization. Keeping the SWP2 Plan and its inspection records on site is what keeps a project clear of stop-work orders.
Inspection requirements
The permit allows 2 inspection schedules; the operator follows one and records the choice in this plan: (a) 7-day inspection monitoring period — inspect at least once every 7 calendar days (S-MCST-2208-1 Part 7.2.10); or (b) 8-to-14-day inspection monitoring period with rain-event inspections — inspect at least once every 14 calendar days and by the end of the next standard weekday following a storm producing 0.5 inch of rain or more in a single monitoring event, or in two consecutive monitoring events when the first is under 0.5 inch (at least once within every 8-to-14-day inspection monitoring period — 14 days unless the SWP2 Plan establishes a shorter routine monitoring frequency; the next standard weekday is Monday through Friday, excluding Federal Holidays and the day after Thanksgiving; rainfall totals come from local weather station daily reports (such as National Weather Service 1200 GMT totals) or on-site rain gauge readings recorded each work day) (S-MCST-2208-1 Part 7.2.10). Routine inspection monitoring periods run from the start date of construction at the chosen routine frequency, without regard to the dates of inspections actually conducted, and at least one routine or rain-event inspection is conducted within each period; if weather or site conditions make access to any portion of the site unsafe or infeasible, record why in the inspection report, monitor and record conditions each standard weekday, and inspect that area by the end of the next standard weekday after access is safe and feasible (S-MCST-2208-1 Part 7.2.10). Every inspection is dated and signed, and any failed control is corrected before the next storm.
| Trigger | Requirement |
|---|---|
| Routine — 7-day inspection monitoring period | At least once every 7 calendar days |
| Routine — 8-to-14-day inspection monitoring period with rain-event inspections | At least once every 14 calendar days and by the end of the next standard weekday following a storm producing 0.5 inch of rain or more in a single monitoring event, or in two consecutive monitoring events when the first is under 0.5 inch (at least once within every 8-to-14-day inspection monitoring period — 14 days unless the SWP2 Plan establishes a shorter routine monitoring frequency; the next standard weekday is Monday through Friday, excluding Federal Holidays and the day after Thanksgiving; rainfall totals come from local weather station daily reports (such as National Weather Service 1200 GMT totals) or on-site rain gauge readings recorded each work day) |
How Kansas differs from the federal permit
| Kansas | Federal (EPA) | |
|---|---|---|
| Authority | KDHE | U.S. EPA |
| Permit | S-MCST-2208-1 | EPA CGP |
| Disturbance threshold | 1 acre | 1 acre |
| Plan name | SWP2 Plan | SWPPP |
Because Kansas administers its own program, the federal EPA Construction General Permit does not apply directly here — the state permit governs. Sites inside a regulated municipal storm sewer system may carry additional local ordinance requirements on top of the state permit.
Frequently asked questions
Does Kansas require an engineer to prepare the SWP2 Plan?+–
KDHE requires the Stormwater Pollution Prevention (SWP2) Plan to be developed and prepared under the supervision of a licensed Kansas professional engineer, geologist, architect, or landscape architect, or a Certified Professional in Erosion and Sediment Control (CPESC).
What is the disturbance threshold in Kansas?+–
One acre — including sites under an acre that are part of a larger common plan of development totaling one acre or more.
How often must inspections happen in Kansas?+–
The permit allows 2 inspection schedules; the operator follows one and records the choice in this plan: (a) 7-day inspection monitoring period — inspect at least once every 7 calendar days (S-MCST-2208-1 Part 7.2.10); or (b) 8-to-14-day inspection monitoring period with rain-event inspections — inspect at least once every 14 calendar days and by the end of the next standard weekday following a storm producing 0.5 inch of rain or more in a single monitoring event, or in two consecutive monitoring events when the first is under 0.5 inch (at least once within every 8-to-14-day inspection monitoring period — 14 days unless the SWP2 Plan establishes a shorter routine monitoring frequency; the next standard weekday is Monday through Friday, excluding Federal Holidays and the day after Thanksgiving; rainfall totals come from local weather station daily reports (such as National Weather Service 1200 GMT totals) or on-site rain gauge readings recorded each work day) (S-MCST-2208-1 Part 7.2.10). Routine inspection monitoring periods run from the start date of construction at the chosen routine frequency, without regard to the dates of inspections actually conducted, and at least one routine or rain-event inspection is conducted within each period; if weather or site conditions make access to any portion of the site unsafe or infeasible, record why in the inspection report, monitor and record conditions each standard weekday, and inspect that area by the end of the next standard weekday after access is safe and feasible (S-MCST-2208-1 Part 7.2.10).
Is an SWP2 Plan the same as a SWPPP?+–
Yes. Kansas uses the term "SWP2 Plan" for what other states call a SWPPP — the same plan and the same requirements.
Kansas-ready in minutes
Siltworks fills in your site data automatically, applies the Kansas requirements, and hands you an inspection-ready SWP2 Plan — at 70–90% less than a consultant.
Requirements summarized from the publicly available Kansas Construction Stormwater General Permit (S-MCST-2208-1) for planning purposes. The operator must review and certify every SWP2 Plan before use.