Construction Stormwater Permit timelines
Construction Stormwater Permit timelines
Link to this table
| Before land disturbance begins | Immediate | 24 hours | End of next business day | 7 days | Within 30 days of event | Other timeframes |
|---|---|---|---|---|---|---|
| Develop a SWPPP, submit a permit application to MPCA and receive permit coverage (item 2.2) | Initiate soil stabilization where construction has permanently or temporarily stopped and will not resume for 14 days, or 7 days if the site discharges to a special or impaired water (item 8.4) | Complete stabilization of exposed soil that are within 200 feet of Public Waters that have DNR “work in water restrictions” during specified fish spawning times (item 8.5) | Repair, replace, or supplement all nonfunctional BMPs with functional BMPs unless another time frame is specified (item 11.4) | Complete stabilization of exposed soils after construction has permanently or temporarily stopped for projects that discharge within one aerial mile radius of a special or impaired water (item 23.9) | If the owner or operator changes, submit a Permit Modification Form to transfer permit responsibility. The form must be submitted before the new owner or operator starts construction activity (item 3.7) | Inspections of areas with permanent cover can be reduced to once per month, even if construction activity continues on other portions of the site (item 11.10) |
| 30 days before land disturbing activities begin: Submit the SWPPP and permit application if the project is 50 or more acres and discharges to a special or impaired water located within one mile (item 3.4) | Re-install all sediment control practices that were removed for short-term activities. Re-install before the next rain event even if the short-term activity is not complete (item 9.6) | Stabilize the wetted perimeter of the last 200 feet of temporary or permanent ditches after connecting to a surface water or property edge. (see 7 or 14 day requirements for remaining portion of the ditch) (item 8.6) | Repair, replace, or supplement all perimeter control devices when they become nonfunctional or the sediment reaches 1/2 the height of the device (item 11.7) | Conduct routine inspections of the entire site by a trained person (item 11.2) | Submit a Notice of Termination (NOT) Form to end permit coverage when the project is finished and all termination conditions are complete (item 4.2) | Upon request, make the SWPPP, inspection records, training records, and other information required by this permit available within 3 days (item 24.5) |
| Install sediment control BMPs on all downgradient perimeters of the site (item 9.2) | Install additional sediment control if downgradient sediment controls are overloaded (item 9.3) | Stabilize temporary or permanent ditches that were being used as sediment containment during construction when they are no longer used (item 8.7) | Remove sediment from sediment basins when sediment reaches half the storage volume (item 11.8) | Amend the SWPPP if inspections identify that changes are needed (item 11.11) | 3 years | Keep the SWPPP and inspection and maintenance records at the site during normal working hours (item 20.2) |
| Delineate the location of areas not to be disturbed (item 8.2) | Install upland perimeter control after working on a shoreline or below the waterline (item 9.5) | Install temporary or permanent energy dissipation at pipe outlets (item 8.9) | Remove all deltas and sediment deposited in surface waters and restabilize exposed soil (item 11.5) | Complete a refresher training for persons required to be trained (item 21.3) | Verify the infiltration or filtration system is drawing down in 48 hours or less (item 16.8) | |
| Protect all storm drain inlets until upgradient areas have permanent cover (item 9.7) | Install sediment control at the base of stockpiles (item 9.9) | Inspect the site if over 0.5 inches of rain falls within a 24 hour period (item 11.2) | 14 days | Retain the SWPPP, inspection records, training records, and other information after the permit is terminated (item 24.5) | Conduct inspections every 3 days for sites that discharge to prohibited waters (item 23.13) | |
| Install a vehicle tracking BMP to minimize track out of sediment from the site (item 9.11) | Report and clean up spills to the Minnesota Duty Officer (item 12.7) | Record all inspections and maintenance activities (item 11.11) | Complete stabilization of exposed soils after construction has permanently or temporarily stopped in that portion of the site (item 8.4) | |||
| Inspect the site after runoff occurs if construction was suspended due to frozen conditions (item 11.10) | ||||||
| Remove sediment from all paved surfaces or in a shorter time to avoid a street safety hazard (item 11.6) |
1 Minnesota Pollution Control Agency document wq-strm4-90; 651-296-6300 | 800-657-3864 or use your preferred relay service | Info.pca@state.mn.us