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