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<td colspan=5>Key to Maintenance Benefits:  
 
<td colspan=5>Key to Maintenance Benefits:  
*Proper stormwater flow and infiltration
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#Proper stormwater flow and infiltration
*Creation and maintenance of wildlife habitat
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#Creation and maintenance of wildlife habitat
*Creation and maintenance of pollinator habitat
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#Creation and maintenance of pollinator habitat
*Nutrient cycling and storage
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#Nutrient cycling and storage
*Aesthetics and public enjoyment
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#Aesthetics and public enjoyment
*Carbon sequestration
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#Carbon sequestration
 
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</table>

Revision as of 11:35, 8 September 2021

Overview and schedule of general maintenance activities for Stormwater and Rainwater Harvest and Use/Reuse Practices 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:
  1. Proper stormwater flow and infiltration
  2. Creation and maintenance of wildlife habitat
  3. Creation and maintenance of pollinator habitat
  4. Nutrient cycling and storage
  5. Aesthetics and public enjoyment
  6. Carbon sequestration