Changes

===Underdrain===

===Underdrain===

Stormwater planters differ from full and/or partial infiltration [[bioretention]] practices in that the storage function is provided only by the [[Bioretention media storage|water retention capacity]] of the [[filter media]]. As such, there is no storage reservoir and the only purpose to the aggregate layer is to drain water to the perforated [[pipe]]. For this, a medium aggregate as described in [[choker layer]] is recommended as it negates the need for a separating layer to the filter media. Design details can be found here  [[Underdrains#Underdrains for non-exfiltrating practices|Underdrains]] for non-exfiltrationg practices.

Stormwater planters differ from full and/or partial infiltration [[bioretention]] practices in that the storage function is provided only by the [[Bioretention media storage|water retention capacity]] of the [[filter media]]. As such, there is no storage reservoir and the only purpose to the aggregate layer is to drain water to the perforated [[pipe]]. For this, a medium aggregate as described in [[choker layer]] is recommended as it negates the need for a separating layer to the filter media. Design details can be found here  [[Underdrains#Underdrains for non-exfiltrating practices|Underdrains]] for non-exfiltrating practices.

===Planting===

===Planting===

==Inspection and Maintenance==

==Inspection and Maintenance==

Stormwater planters requires regular, routine inspection and maintenance of the landscaping as well as periodic inspection of other parts of the facility, especially in heavily urbanized environments. Routine maintenance should include weeding, pruning, and mulching, similar to other landscaped areas, as well as the removal of trash, debris and sediment accumulated in pretreatment areas, inlets and outlets. Watering may be needed until plant establishment (first 2 years). Periodic replacement of filter media around inlets (e.g., every 5 to 10 years) will help maintain treatment performance.<br>

Stormwater planters requires regular, routine inspection and maintenance of the landscaping as well as periodic inspection of other parts of the facility, especially in heavily urbanized environments. Routine maintenance should include weeding, pruning, and mulching, similar to other landscaped areas, as well as the removal of trash, debris and sediment accumulated in pretreatment areas, inlets and outlets. Watering may be needed until plant establishment (first 2 years). Periodic replacement of the top 5 cm of filter media around inlets (e.g., every 5 to 10 years) will help maintain treatment performance.<br>

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Inspections should occur twice annually (spring and late fall) and after major storm events. Inspect for vegetation density (≥ 80% coverage), damage by foot or vehicle traffic, erosion, debris, soil compaction and sediment accumulation, along with any damage to pretreatment devices.<br>

Inspections should occur twice annually (spring and late fall) and after major storm events. Inspect for vegetation density (≥ 80% coverage), damage by foot or vehicle traffic, erosion, debris, soil compaction and sediment accumulation, along with any damage to pretreatment devices.<br>