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#The ''maximum'' total depth may be limited by the [[Infiltration| conditions underground]] e.g. the groundwater or underlying geology/infrastructure.
#The ''maximum'' total depth may be limited by the [[Infiltration| conditions underground]] e.g. the groundwater or underlying geology/infrastructure.
#The minimum total depth will be limited by the need to support vegetation i.e. not < 0.6 m.
#The minimum total depth will be limited by the need to support vegetation i.e. not < 0.6 m.
#[[Bioretention cells]] have a maximum recommended I/P ratio of 20.
#[[Bioretention]] has a maximum recommended I/P ratio of 20.
==Size a bioretention cell==
==Size a bioretention cell==