Changes

*Treating runoff collected from nearby impervious surfaces}}

*Treating runoff collected from nearby impervious surfaces}}

'''The fundamental components of a bioretention cell are:'''

'''The fundamental components of a bioretention cell are:'''

*[[Inlets| Inlets]]

*[[Inlets| Inlets]] which may be curb openings, pipes, shallow catchbasins, trench drains or other inlet structures;

*A surface ponding area defined by landscaped side slopes or hardscape structures.

*A surface ponding area defined by landscaped side slopes or hardscape structures;

*A filter bed containing [[Bioretention: Filter media| filter media]]

*A filter bed containing [[Bioretention: Filter media| filter media]];

*An [[Bioretention: Internal water storage| internal water storage reservoir]] composed of a [[reservoir aggregate]] layer, and may include embedded void-forming structures to minimize depth and conserve aggregate, and organic material derived from untreated wood (aids in dissolved nitrogen removal).

*An [[Bioretention: Internal water storage| internal water storage reservoir]] composed of a [[reservoir aggregate]] layer, and may include embedded void-forming structures to minimize depth and conserve aggregate, and organic material derived from untreated wood (aids in dissolved nitrogen removal);

*[[Plant lists|Plants]], and

*[[Plant lists|Plants]];

*A filter bed surface cover layer (e.g. [[mulch]] and [[stone]])

*A filter bed surface cover layer (e.g. [[mulch]] and [[stone]]);

*An [[Overflow| overflow outlet]] to safely convey excess flow to a downstream storm sewer or the next BMP in the treatment train.

*An [[Overflow| overflow outlet]] to safely convey excess flow to a downstream storm sewer or the next BMP in the treatment train.

'''Additional components may include:'''  

'''Additional components may include:'''  

*An [[underdrain]] to redistribute or remove excess water and structures or standpipe ports for periodic inspection and flushing

*An [[underdrain]] to redistribute or remove excess water and structures or standpipe ports for periodic inspection and flushing;

*[[Wells|Monitoring wells]] installed to the base and screened in the [[Bioretention: Internal water storage| internal water storage reservoir]] to verify and track [[Drainage time|drainage time]]

*[[Wells|Monitoring wells]] installed to the base and screened in the [[Bioretention: Internal water storage| internal water storage reservoir]] to verify and track [[Drainage time|drainage time]]; and

*Filter media [[additives]] intended to enhance retention of nutrients, metals, petroleum hydrocarbons and/or bacteria.

*Filter media [[additives]] intended to enhance retention of nutrients, metals, petroleum hydrocarbons and/or bacteria.