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Filtration - installation and maintenance recommendations
Link to this table
Device | Installation notes | Frequency of inspections | Maintenance checklist (link) | Permitted on private land/ Maintenance agreement recommended | Practices for minimizing sediment and trash buildup | Practices for minimizing washout | Cost considerations (equipment needed and man hours) |
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Pretreatment vegetated filter strip (VFS | Construction sequence | Quarterly and after every 1 in storm event for first two years, then biannually [1] | Sediment removed at least biannually of when buildup exceeds 2 inches in depth [2] | Appropriate vegetation and landscaping maintenance; See Appendix [3] | Generally $100-$1400 per acre [4] | ||
Level-Spreader - Vegetative Filter Strip System (LS-VFS) | Construction notes | Quarterly and after every 1 in storm event for first two years, then biannually [5] | Sediment removed at least biannually of when buildup exceeds 2 inches in depth [6] | Appropriate vegetation and landscaping maintenance; See Appendix [7] | Generally $100-$1400 per acre [8] | ||
Up-Flo Filter | Every 6 months for first year of operation, then site specific. Floatables, sediment, media, and drain down filter each need to be inspected [9] | Inspection and maintenance checklist | Sediment removal at least once per year or once sediment depth is 16 inches [10] | Routine maintenance for manhole unit takes about 1 hour [11] | |||
Storm Clean | One-person installation [12] | Monthly [13] | Maintenance instructions | When visual inspection or water sampling show degradation. MetalZorb is non-hazardous and does not require special waste handling [14] | Vactor truck or large shop vac; One person [15] | ||
Gravel filtration | After each rainfall | Remove sediment from behind bag as needed | |||||
Filtration berm | Construction sequence | After each rainfall [16] | Maintenance considerations | Routinely remove accumulated trash and debris [17] | Appropriate vegetation and landscaping maintenance (eg. mowing and level gradient restoration); See Appendix [18] | Depends on height, length, width, and location of berm [19] | |
SiltSoxx R by Filtrexx | Installation instructions | Within 24 hours after rainfall event [20] | Maintenance instructions | Sediment removal from upslope side when accumulation has reached ½ the effective height of the Soxx [21] | |||
StormExx | Installation notes | Every 90 days, frequent drive through inspection during leaf-fall and after storm events [22] | Costs for one year of service and maintenance may be added to proposal [23] | Quarterly general service, fall cleaning and cartridge replacement [24] |