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 |
|