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    • HOME
    • ALTERNATIVES
    • PUBLIC OUTREACH
    • DOCUMENTS & LINKS
    • CONTACT INFORMATION
  • HOME
  • ALTERNATIVES
  • PUBLIC OUTREACH
  • DOCUMENTS & LINKS
  • CONTACT INFORMATION

Alternative 1: No Action

  

Continue hauling water (5 gallons per person per day) from the water treatment plant (WTP) and dumping sewage in the treatment lagoons. 

  • No improvement to sanitation
  • Continued operations challenges of collection and hauling
  • Other upgrades outside of this work:
  • Existing water storage tank (WST) replacement
  • Upgrade raw water pipeline heating system
  • Repair/protect pipeline bridge abutment scouring 

   

Alternative 2: Piped Water & Low-Pressure Sewer Network

Above ground pipes to every building (75 gallons per person per day)


Facts:

  • No hauling water or sewage


  • Enough water for: 

             o In-home laundry

             o Baths/shower 

             o Flush toilets


  • Water Treatment; 

             o Expand existing WTP

             o Build additional WTP


  • Water Storage

            o Build more storage (7-10 days treated water volume)


  • Wastewater Collection 

             o Residential lift stations would be installed above ground and could potentially collect 4 houses worth of sewage.

  

  • Homeowner is responsible for electric costs of:

             o Residential sewer lift station

             o Residential water circulation pump (if needed)

                - Heat/glycol trace circulation pump

What is Low-Pressure Sewer?

Alternative 3: Piped Water & Vacuum Sewer Network

Above ground pipes to every building (75 gallons per person per day)


Facts:

  • No hauling water or sewage
  • Enough water for: 

             o In-home laundry

             o Baths/shower 

             o Flush toilets

  • Water Treatment; 

             o Expand existing WTP

             o Build additional WTP

  • Water Storage

             o Build more storage (7-10 days treated water volume)

  • Wastewater Collection 

             o Vacuum valves would be installed outside the home and could potentially hook up to the existing wastewater storage tanks. 

  • Homeowner is responsible for electric costs of:

             o Residential sewer lift station

             o Residential water circulation pump (if needed)

                - Heat/glycol trace circulation pump

How does a vacuum sewer system work?

Alternative 4: Satellite Stations

Aboveground pipes to several central locations to which clusters of homes can connect to retractable hoses (3 to 12 gallons per person per day).


Facts:

  • No hauling water or sewage
  • Enough water for: 

             o In-home laundry

             o Baths/shower 

             o Flush toilets

  • Water Treatment; 

             o Expand existing or replace Water Treatment Plant

  • Water Storage

             o Build more storage (7-10 days treated water volume)

  • Periodically transfer water from connection points on the water main to residential tanks
  • Less equipment than fully-piped water
  •  Wastewater Collection 

            o Could be either vacuum of low-pressure sewer system. 

            o Each home would have a sewer service pipe connected to the house.

  • Homeowner is responsible for electric costs of:

             o Residential sewer lift station or vacuum valves

Alternative 5: Maintain Existing Water Haul System and Install New Piped Sewer

Above ground wastewater pipes to every building (75 gallons per person per day)


Facts:

  • No hauling sewage
  • Water Treatment; 

             o Expand existing WTP

  • Wastewater Collection 

             o Could be either vacuum of low-pressure sewer system. 

             o Each home would have a sewer service pipe connected to the house.

  • Homeowner is responsible for electric costs of:

             o Residential sewer lift station or vacuum valves

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