Compare Regulations
Compare state-level permit requirements side-by-side (up to 4 states)
MO(3 more)
Rows with an amber indicator differ across selected states.
| Field | MO Missouri |
|---|---|
| NPDES Program | State-Delegated |
| Permitting Agency | Missouri Department of Natural Resources (MDNR) |
| Permit Name | NPDES/SDS Land Disturbance General Permit (MOR100000) |
| Construction Threshold | ≥ 1 acre of total land disturbance (or < 1 acre if part of a larger common plan of development or sale that will ultimately disturb ≥ 1 acre); also applies to any earth-disturbing activity that the Director determines has the potential to cause water quality violations |
| NOI Lead Time | Land Disturbance Permit (LDP) application and NOI must be submitted and authorization received before any land-disturbing activities begin. Missouri requires a minimum 2-business-day processing period for complete applications; applicants should allow 5–10 business days in practice |
| Application Method | Online via Missouri's Environmental Online Permitting System (myMOEnvironment portal at my.moenv.org); paper applications also accepted at MDNR regional offices |
| Permit Fee | $75 application fee for disturbances < 5 acres; $150 for 5–10 acres; $225 for > 10 acres; annual renewal fees apply if permit coverage extends beyond one year |
| SWPPP Required | Yes |
| PE Certification Required | No |
| SWPPP Template Available | Yes |
| Inspection Frequency | At least every 14 days and within 24 hours after any measurable precipitation event (defined as ≥ 0.5 inches of rainfall in a 24-hour period). Inspections must also be conducted after any snowmelt that causes a discharge. |
| Inspector Qualification | Missouri requires that at least one Certified Erosion, Sediment and Stormwater Inspector (CESSI) be identified for each project. CESSI certification is obtained through MDNR-approved training programs (e.g., CPESC, CESSWI, or equivalent). This is a state-mandated certification requirement, making Missouri one of the more stringent states for inspector qualifications. |
| Post-Construction Required | Yes |
| Turbidity Standard | No numeric NTU effluent limit in the Land Disturbance General Permit MOR100000 |