Difference between revisions of "Cost components for filtration practices"
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Revision as of 17:39, 14 February 2013
Link to this table
| Implementation Stage | Primary Cost Components | Basic Cost Estimate | Other Considerations |
|---|---|---|---|
| Site Preparation | Tree & plant protection | Protection Cost ($/acre) x Affected Area (acre) | Removal of existing structures, topsoil removal and stockpiling |
| Topsoil salvage | Salvage cost ($/acre) x Affected Area (acre) | ||
| Clearing & grubbing | Clearing Cost ($/acre) x Affected Area (acre) | ||
| Site Formation | Excavation / grading | X-ft Depth Excavation Cost ($/acre) x Area (acre) | Soil & rock fill Hauling material material, tunneling |
| Hauling material offsite | Excavation Cost x (% of Material to be hauled away) | ||
| Structural Components | Under-drains | Under-drain cost ($/lineal foot) x length of device | Pipes, catchbasins, manholes, valves, vaults |
| Vault structure (for media filters) | ($/structure) | ||
| Media (for media filters) | Media cost ($/cubic yard) X filter volume (cubic yard) | ||
| Inlet structure (for vegetative filters | ($/structure) | ||
| Outlet structure (for vegetative filters) | ($/structure) | ||
| Site Restoration | Filter strip | Sod cost ($/square foot) x filter strip area | Tree protection, soil amendments, seed bed preparation, trails |
| Soil preparation | Topsoil or amendment cost ($/acre) x Area (acre) | ||
| Seeding | Seeding Cost ($/acre) x Seeded Area (acre) | ||
| Planting / transplanting | Planting Cost ($/acre) x Planted Area (acre) | ||
| Annual Operation, Maintenance, and Inspection | Debris removal | Removal Cost ($/acre) x Area (acre) x Frequency (2x / 1yr) | Vegetation maintenance, cleaning of structures |
| Sediment removal | Removal Cost ($/acre) x Area (acre) x Frequency (1x / 5yr) | ||
| Gate / valve operation | Operation Cost ($) x Operation Frequency (2x / 1 yr) | ||
| Inspection | Inspection Cost ($) x Inspection Frequency (6x / 1 yr) | ||
| Mowing (for some vegetative filters) | Mowing Cost ($) x Mowing Frequency (4x / 1 yr) |