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| {{TOClimit|2}} | | {{TOClimit|2}} |
| ==Overview== | | ==Overview== |
− | Bioretention systems may be the most well recognized form of [[low impact development]] (LID). They can fit into any style of landscape and encompass all mechanisms of action: [[infiltration]], filtration, attenuation and [[evapotranspiration]]. | + | Bioretention systems may be the most well recognized form of [[low impact development]] (LID). They can fit into any style of landscape and utilize all of the treatment mechanisms: [[infiltration]], filtration, attenuation and [[evapotranspiration]]. |
| {{textbox|Bioretention is an ideal technology for: | | {{textbox|Bioretention is an ideal technology for: |
| *Fitting functional vegetation into urban landscapes | | *Fitting functional vegetation into urban landscapes |
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| *A surface ponding area | | *A surface ponding area |
| *A filter bed containing a [[Bioretention: Filter media| filter media]] | | *A filter bed containing a [[Bioretention: Filter media| filter media]] |
− | *A water storage layer of [[reservoir aggregate]] | + | *An internal water storage reservoir composed of void-forming structures and or [[reservoir aggregate]] layer |
| *[[Plant lists|Plants]], and | | *[[Plant lists|Plants]], and |
− | *A filter bed surface cover layer (e.g. [[mulch]] and/or [[stone]]) | + | *A filter bed surface cover layer (e.g. [[mulch]] and [[stone]]) |
| '''Additional components may include:''' | | '''Additional components may include:''' |
| *An [[underdrain]] to redistribute or remove excess water | | *An [[underdrain]] to redistribute or remove excess water |
− | *Filter media [[additives]] intended to enhance nutrient and related water quality pollutant removal | + | *Filter media [[additives]] intended to enhance retention of nutrients, metals, hydrocarbons or bacteria. |
| | | |
| ==Planning considerations== | | ==Planning considerations== |