Cost components for filtration practices Cost components for filtration practices

Cost components for filtration practices.
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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)