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* 0.7 for wood based
* 0.7 for wood based
* 0.4 for aggregate
* 0.4 for [[stone]]
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| [[Bioretention: Filter media|filter media]] (''d<sub>m</sub>'')
| [[Bioretention: Filter media|filter media]] (''d<sub>m</sub>'')
* 600 mm to support flowering [[perennials]] and decorative [[grasses]]
* 600 mm to support flowering [[perennials]] and decorative [[grasses]]
* 1000 mm to support [[trees]]
* 1000 mm to support [[trees]]
| [[Bioretention media storage| 0.4]] for sandy mix, to 0.35 for a more loamy mix.
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*[[Bioretention media storage| 0.4]] for sandy mix
* 0.35 for a more loamy mix.
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| [[choker layer|Choker course]]
| [[choker layer|Choker course]]