Stormwater Harvesting and Use Component Checklist and Cost Units

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Phase Component Unit Check if required for system:
Collection Cleaning of roof (if retrofit project) Square foot
Roof washing system Each
Gutters Linear foot
Gutter screens Linear foot
Downspouts Linear foot
Scuppers Each
Catch basins Each
Catch basin filters Each
Manholes Each
Oil/water separators Each
Storm sewers Linear foot
Bypass valves Each
First flush diverter Each
Storage – Ponds/ basins Site demolition Varies
Excavation Cubic foot
Disposal of excess soil Cubic foot
Vegetation restoration Square foot
Baffles at outlet Linear foot
Filters at outlet Each
Outlet structure Each
Pumping system including pump, motor, valves, and pressure tank (for non-gravity and pressurized systems) Varies
Aeration Varies
Electrical supply (for pumps or aeration) Varies
Below-ground storage Site demolition Varies
Excavation and backfill Cubic foot
Imported aggregate bedding material Cubic foot
Disposal of excess soil Cubic foot
Vegetation or pavement restoration Square foot
Pre-fabricated tanks Each
Baffles, calming inlet, and/or filters, if not supplied with pre-fabricated tank Each
Cast-in-place concrete tank Varies
Pumping system including pump, motor, valves, and pressure tank (for non-gravity and pressurized systems) Varies
Maintenance access manhole Each
Electrical supply (for pumps) Varies
Treatment systems Piping Linear foot
Valves Each
Flow meter (when needed to regulate chemical feed) Each
Electrical supply Varies
Maintenance access manhole (if located underground) Each
Backflow prevention valves (if connected to potable water for supplemental supply and/or for filter backwash) Each
Suspended & Colloidal Solids Removal Systems
  • Chemical feed
  • Tank with baffles or mixing device (if chemicals not fed into inline mixing device)
  • Settling basin with dewatering valves for solids removal
Varies
Residual Suspended Solids Removal Systems
  • Filter chamber containing activated carbon or other filter media, including piping and valves for bypass and backwash (for filtration systems)
  • Tank with micro-bubble diffusion, dewatering valves, and surface skimmer (for dissolved air flotation systems)
Varies
Residual Colloidal Solids Removal Systems
  • Filter chamber containing multi-media, including piping and valves for bypass and backwash (for ultrafiltration systems)
Varies
Dissolved Solids Removal Systems
  • pH feed (for reverse osmosis systems)
  • Chemical feed (for electrodialysis systems)
  • Filter chamber containing semi-permeable membrane, including piping and valves for bypass and backwash (for all systems)
  • Solids disposal system
Varies
Disinfection
  • Chemical feed (for continuous chlorine disinfection)
  • Tank with baffles or mixing device (for batch disinfection with chlorine)
  • Contact tank with UV lights and piping (for ultraviolet disinfection)
  • Tank with piping, valves, ozone diffuser (for ozone disinfection)
  • Off-gas ozone destructor tank (for ozone disinfection)
Varies
Distribution Pumping system including pump, motor, valves and pressure tank Varies
Piping for distribution Linear foot
Valves for pressure control, and regulating flow Each
Valve boxes Each
Sprinkler nozzles – impulse, spray, rotating, bubbler, or drip Each
Irrigation controllers with wiring to each sprinkler (for automated control systems) Varies
Drain plug (for winterization) Each

This page was last edited on 13 April 2020, at 19:14.

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