Bioretention - operation and maintenance checklist.
Link to this table
To access an Excel version of form (for field use), click here.

Site Status:
Maintenance Item Satisfactory / Unsatisfactory Comments
1. Debris Cleanout (Monthly)
Contributing areas clean of litter and vegetative debris
No dumping of yard wastes into practice
Bioretention area clean of litter and vegetative debris
2. Vegetation (Monthly)
Plant height taller than design water depth
Fertilized per O&M plan
Plant composition according to O&M plan
Undesirable vegetation removed
Grass height less than 6 inches
No evidence of erosion
3. Check Dams/Energy Dissipaters/Sumps (Annual, After Major Storms)
No evidence of sediment buildup
Sumps should not be more than 50% full of sediment
No evidence of erosion at downstream toe of drop structure
4. Dewatering (Monthly)
Dewaters between storms within 48 hours
No evidence of standing water
5. Sediment Deposition (Annual)
Pretreatment areas clean of sediments
Contributing drainage area stabilized and clear of erosion
Winter sand deposition evacuated every spring
6. Outlet/Overflow Spillway (Annual, After Major Storms)
Good condition, no need for repair
No evidence of erosion
No evidence of any blockages
7. Integrity of Filter Bed (Annual)
Filter bed has not been blocked or filled inappropriately
Actions to be taken:

This page was last edited on 4 August 2022, at 17:25.