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<td>Level-Spreader - Vegetative Filter Strip System (LS-VFS)</td> | <td>Level-Spreader - Vegetative Filter Strip System (LS-VFS)</td> | ||
− | <td>[https:// | + | <td>[https://files.nc.gov/ncdeq/Water%20Quality/Surface%20Water%20Protection/SPU/SPU%20-%20BMP%20Manual%20Documents/BMPMan-Ch08-20100309-DWQ-SPU.pdf Construction notes]</td> |
<td>Quarterly and after every 1 in storm event for first two years, then biannually [https://www.stormwaterpa.org/assets/media/BMP_manual/chapter_6/Chapter_6-4-9.pdf]</td> | <td>Quarterly and after every 1 in storm event for first two years, then biannually [https://www.stormwaterpa.org/assets/media/BMP_manual/chapter_6/Chapter_6-4-9.pdf]</td> | ||
<td></td> | <td></td> |
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) |
---|---|---|---|---|---|---|---|
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 | Appropriate vegetation and landscaping maintenance; See Appendix [2] | Generally $100-$1400 per acre | ||
Level-Spreader - Vegetative Filter Strip System (LS-VFS) | Construction notes | Quarterly and after every 1 in storm event for first two years, then biannually [3] | Sediment removed at least biannually of when buildup exceeds 2 inches in depth [4] | Appropriate vegetation and landscaping maintenance; See Appendix [5] | Generally $100-$1400 per acre [6] | ||
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 [7] | Inspection and maintenance checklist | Sediment removal at least once per year or once sediment depth is 16 inches [8] | Routine maintenance for manhole unit takes about 1 hour [9] | |||
Storm Clean | One-person installation [10] | Monthly [11] | Maintenance instructions | When visual inspection or water sampling show degradation. MetalZorb is non-hazardous and does not require special waste handling [12] | Vactor truck or large shop vac; One person [13] | ||
Gravel filtration | After each rainfall | Remove sediment from behind bag as needed | |||||
Filtration berm | Construction sequence | After each rainfall [14] | Maintenance considerations | Routinely remove accumulated trash and debris [15] | Appropriate vegetation and landscaping maintenance (eg. mowing and level gradient restoration); See Appendix [16] | Depends on height, length, width, and location of berm [17] | |
SiltSoxx R by Filtrexx | Installation instructions | Within 24 hours after rainfall event [18] | Maintenance instructions | Sediment removal from upslope side when accumulation has reached ½ the effective height of the Soxx [19] | |||
StormExx | Installation notes | Every 90 days, frequent drive through inspection during leaf-fall and after storm events [20] | Costs for one year of service and maintenance may be added to proposal [21] | Quarterly general service, fall cleaning and cartridge replacement [22] |