| http://www.w3.org/ns/prov#value | - One of two pipes extends from ground level down the shaft and terminates in an outlet to provide for injecting a pressurized gas such as air, oxygen or carbon dioxide into the water table for the purpose of developing gaseous bubbles that entrain, for example, contaminants, such as fuel oil, gasoline, lubricating oil, chlorinated hydrocarbons, transformer dielectric liquids and a host of other vol
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