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  2. Urban runoff - Wikipedia

    en.wikipedia.org/wiki/Urban_runoff

    Oil slick created by runoff A percolation trench allows infiltration of stormwater through permeable soils into the groundwater aquifer. An oil-grit separator is designed to capture settleable solids, oil and grease, debris and floatables in runoff from roads and parking lots. Excessive stream bank erosion may cause flooding and property damage.

  3. Oil skimmer - Wikipedia

    en.wikipedia.org/wiki/Oil_skimmer

    Oil removal concentration: It is a common misconception that oil skimmers remove concentrated or pure 'oil'; when in fact they remove a mixture of oil and water. In most situations the 'oil' mixture removed is an emulsion of oil and water more like a 'mousse'.

  4. Trench drain - Wikipedia

    en.wikipedia.org/wiki/Trench_drain

    A trench drain (also known as a channel drain, line drain, slot drain, linear drain, or strip drain) is a specific type of floor drain featuring a trough- or channel-shaped body. It is designed for the rapid evacuation of surface water or for the containment of utility lines or chemical spills.

  5. Rain garden - Wikipedia

    en.wikipedia.org/wiki/Rain_garden

    In a bioretention system such as a rain garden, water filters through layers of soil and vegetation media, which treat the water before it enters the groundwater system or an underdrain. Any remaining runoff from a rain garden will have a lower temperature than runoff from an impervious surface, which reduces the thermal shock on receiving ...

  6. Spill containment - Wikipedia

    en.wikipedia.org/wiki/Spill_containment

    Spill containment is where spills of chemicals, oils, sewage etc. are contained within a barrier or drainage system rather than being absorbed at the surface. One method is to use an inflatable stopper or pneumatic bladder which is inserted into the outflow of a drainage system to create a containment vessel.

  7. Storm drain - Wikipedia

    en.wikipedia.org/wiki/Storm_drain

    Storm drain grate on a street in Warsaw, Poland Storm drain with its pipe visible beneath it due to construction work. A storm drain, storm sewer (United Kingdom, U.S. and Canada), highway drain, [1] surface water drain/sewer (United Kingdom), or stormwater drain (Australia and New Zealand) is infrastructure designed to drain excess rain and ground water from impervious surfaces such as paved ...

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    AOL Mail is free and helps keep you safe. From security to personalization, AOL Mail helps manage your digital life Start for free

  9. Drain-waste-vent system - Wikipedia

    en.wikipedia.org/wiki/Drain-waste-vent_system

    A sewer pipe is normally at neutral air pressure compared to the surrounding atmosphere.When a column of waste water flows through a pipe, it compresses air ahead of it in the system, creating a positive pressure that must be released so it does not push back on the waste stream and downstream traps, slow drainage, and induce potential clogs.

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