Water found in nature that must be treated before use.
What is raw water?
The place where 25% of houses in America send their waste water after use before treatment.
What is a Septic Tank?
The new system we use that replaced simple and ineffective Garbage Dumps.
What is a Sanitary Landfill?
The type of roads in residential and commercial areas.
What are Local?
The mechanical properties of soil.
What are Soil Mechanics?
The method of water treatment that removes salt and other impurities from salt water.
What is Desalination?
The place where 75% of houses send their waste water after use before treatment.
What is a Sanitary Sewer System?
The type of material that is most easily recycled.
What are Metals?
The type of roads that connect long distance roads and roads in commercial areas.
What is Collector?
The way you extract soil to test its properties before constructing a tunnel.
What is Drilling Boreholes?
The step in water treatment that kills viruses and bacteria present in the water, typically by using chlorine.
What is Disinfection?
The location of the treatment plant for waste water in a town.
What is the lowest point of elevation in town?
The drawbacks to incineration as a form of solid waste disposal.
What are toxic ash and emissions?
Type of roads used for long distance travel.
What is Arterial?
The type of tunnels used close to the surface.
What is Cut and Cover?
The step of water treatment that uses a filter consisting of a series of horizontal layers of sand, gravel, and coal.
What is Filtration?
Tank in the waste water treatment process that stirs the waste very slowly and settles the various impurities into layers.
What is a Sedimentation Tank?
The plastic protective layer that goes on top of the bottom layer of clay.
What is a Geo-Membrane?
The procedure necessary to determine how many lanes are needed for a highway.
What is a Traffic Study?
Type of tunnel that is constructed with a tunnel boring machine and use access points on the surface.
What is a Bored Tunnel?
This step of water treatment uses a series of progressively smaller and smaller grates to remove trash, weeds, leaves, etc.
What is Clarification?
The substance that must be added into the water before it is put back into the environment.
What is Oxygen?
The hazardous liquid formed when rainwater percolates through decomposing waste.
What is Leachate?
The specific path the road will take as viewed from above.
What is Alignment?
The type of tunnel constructed by submerging segments of tunnel and connecting them.
What is Immersed Tube?