Overview and schedule of general maintenance activities for wetlands
Overview and schedule of general maintenance activities for wetlands
Link to this table
| First Year of Operation | ||||
|---|---|---|---|---|
| Activity | Frequency | Time Period | Level of Effort | O&M Benefit |
| Check operation of mechanical parts like pumps | At least twice after the system becomes operational | During a storm event | 2-4 hours | 1 |
| Check condition of first flush and high flow diverters | At least twice after storm events > 0.5 inches | Within the first 6 months | 1-2 hours | 1 |
| Check for clogging | At least twice after storm events > 0.5 inches | Within the first 6 months | 1-2 hours | 1 |
| Check for erosion downstream of the high flow diverter | At least twice after storm events > 0.5 inches | Within the first 6 months | 1 hour | 1 |
| Check for leaks | At least twice after storm events > 0.5 inches | Within the first 6 months | 1 hour | 1 |
| Check performance of water treatment system and adjust treatment parameters | After tank has filled up | Within first month | 2 hours | 4 |
| After First Year of Operation | ||||
| Activity | Frequency | Time Period | Level of Effort per Visit | O&M Benefit |
| Inspect and clean pre screening devices and first flush diverters | Quarterly | Seasonally | 2 hours | 1 |
| Check and clean any filters to prevent clogging | 3 times per year and/or after each event that exceeds the design capacity of the collection system | 1-2 hours | 1 | |
| Remove leaves and debris from the gutters and downspouts | Semi-annually | Spring and Fall | 2-4 hours | 1 |
| Clean out tank to remove sediment and algae | Semi-annually | Spring and Fall | 4 hours | 1,4 |
| Check and repair damage to collection surface and collection tanks | Annually | Spring or Fall | 2-4 hours | 1 |
| Check and repair erosion along the diversion pathways | Annually | After large storm | 1-2 hours | 1 |
| Check and repair any leaks | Annually | Spring or Fall | 2-4 hours | 1 |
| Inspect and repair mosquito screens | Annually | Spring or Fall | 1-2 hours | 1 |
| Clear overhanging vegetation and trees over roof | Annually | Winter | 1 | |
| Winterize or disconnect the storage system before the winter | Annually | Late Fall | Depends on system | 1 |
| Check structural integrity of tank, pump, pipe, and electrical system and repair any damages as needed | Every 3 years | As convenient | Depends on repairs needed | 1 |
| After 5+ Years of Operation (non-routine maintenance) | ||||
| Activity | Frequency | Time Period | Level of Effort per Visit | O&M Benefit* |
| After long term operation of the practice, some occasional and infrequent maintenance activities might be required, such as replacement of structural materials, conveyance equipment, or storage tanks. | As needed | As needed | Could be significant depending on the activity | 1,4 |
Key to Maintenance Benefits:
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