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− | <td | + | <td>Monthly or as required</td> |
− | <td>Performance of water treatment system</td> | + | <td rowspan=2>Performance of water treatment system</td> |
<td>Test water quality at point of use and at other points in the system (outlet of collection system, in-tank) as required</td> | <td>Test water quality at point of use and at other points in the system (outlet of collection system, in-tank) as required</td> | ||
</tr> | </tr> |
Component | Timeframe | What to look for during Inspection | Maintenance 1 |
---|---|---|---|
Source Area/Collection Surface | Annually | Changes in land use or land disturbance | Implement source control BMPs as needed to help meet pre-storage water quality targets |
Pollution hot spots | |||
Damage to roofing materials | Repair as needed | ||
Overhanging branches | Trim overhanging branches | ||
Nests or other evidence of animal activity | Remove nests and implement additional measures to discourage animal activity | ||
Monthly or as needed | General condition of pavement | Adjust street sweeping schedule as needed to maintain clean pavement | |
Collection System | Spring startup and fall | General condition of gutters, downspouts, and conveyances | Clean accumulated debris in fall prior to winter operations or seasonal shut-down, and as needed. |
Debris clogging inlets, gutters, downspouts, and other conveyances | |||
Evidence of leaks at junctions or along conveyances | |||
After large storms | General condition of first flush and high-flow diverters (bypass system) | Repair as needed | |
Soil erosion or flooding along diversion flow pathways | Provide appropriate erosion control measures (rip rap, check dams, etc.) | ||
Storage System | Spring start up | General condition of all storage system components | Clean, repair and replace as needed |
Position and function of valves | Test per manufacturer’s guidelines | ||
Function of operational structures and controls | |||
Periodically following startup | Tank ventilation | Clean, repair and replace as needed | |
Excess soil moisture near tanks or other evidence of leaks | Repair leaks per manufacturer’s guidance | ||
Growth of algae or microbes | Drain and clean tank per manufacturer’s guidelines | ||
Intrusion of mosquitos or small animals | Implement appropriate pest control as needed | ||
Monthly | Sediment level in tank or pond | Remove sediment when the tank sediment storage volume has reached 50% of capacity | |
Treatment Systems | Spring startup | General condition and function of all treatment system components | Conduct testing per manufacturer’s guidance
Clean and repair as needed |
Twice per year | Clogging from accumulated dirt and debris in pre-storage treatment components | Clean as needed | |
Evidence of leaks from loose fittings, joints | Repair as needed | ||
3 times per year AND after each rain event that exceeds the design capacity of the collection system | Clogging of intake and filters in first flush diverters, especially during pollen season (filter clogging) | lean and replace as needed | |
Monthly or as required | Performance of water treatment system | Test water quality at point of use and at other points in the system (outlet of collection system, in-tank) as required | |
Adjust treatment parameters to meet any water quality deficiencies | |||
Per manufacturer specifications and as needed | Condition of replaceable components in the treatment systems (filters, cartridges, bulbs, etc.) | Replace/repair per manufacture’s guidelines and as needed. Typical UV treatment is annual and filters are started on a quarterly basis or when differential pressure drops. | |
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1See also decommissioning and winter maintenance tasks