Infiltration practices cost components

Infiltration practices cost components.
Link to this table

Implementation Stage	Primary Cost Components	Basic Cost Estimate	Other Considerations
Site Preparation	Tree & plant protection	Protection Cost ($/acre) x Affected Area (acre)	Removal of existing structures, topsoil removal and stockpiling
	Infiltration area protection	Silt fence cost ($/’foot) x Perimeter of infiltration area
	Clearing & grubbing	Clearing Cost ($/acre) x Affected Area (acre)
	Topsoil salvage	Salvage Cost ($/acre) x Affected Area
Site Formation	Excavation / grading	X-ft Depth Excavation Cost ($/acre) x Area (acre)	Soil & rock fill material, tunneling
	Hauling material offsite	Excavation Cost x (% of Material to be hauled away)
Structural Components	Vault structure (for underground infiltration)	($/structure)	Pipes, catchbasins, manholes, valves, vaults
	Media (for infiltration trenches)	Media cost ($/cubic yard) X filter volume (cubic yard)
	Geotextile	Geotextile cost ($/cy) x area of trench, including walls
	inlet structure	($/structure)
	Overflow structure	($/structure)		X
	Observation well	($/structure)
Site Restoration	Soil preparation	Topsoil or amendment cost ($/acre) x Area (acre)	Tree protection, soil amendments, seed bed preparation, trails
	Seeding	Seeding Cost ($/acre) x Seeded Area (acre)		X	X
	Filter strip	Sod cost ($/square foot) x filter strip area
	Planting / transplanting	Planting Cost ($/acre) x Planted Area (acre)
Annual Operation, Maintenance, and Inspection	Sediment removal	Removal Cost ($/acre) x Area (acre) x Frequency (1x / 5yr)	Vegetation maintenance, cleaning of structures
	Debris removal	Removal Cost ($/acre) x Area (acre) x Frequency (2x / 1yr)
	Inspection	Inspection Cost ($) x Inspection Frequency (6x / 1 yr)
	Mowing (for some vegetative filters)	Mowing Cost ($) x Mowing Frequency (6x / 1 yr)