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poly 3 1325 471 1322 474 1292 474 1096 487 1095 487 1339 3 1340 [[Overflow]]
 
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Hydraulically separated or connected with an [[underdrain]], these are often quite small units of 5 - 50 m<sup>2</sup> each. In urban settings the bioretention may be bounded entirely with hardscape, restricting options for [[pretreatment]] and sheet flow. Amenity and safety can be enhanced on sidewalks with a short (~ 45 cm wall) for seating, although the finished grade is usually only slightly lower than surroundings.  Where underground space permits, shade [[trees]] are common feature of these facilities, enhancing the streetscape experience and optimizing transpiration. This type of bioretention is often designed offline, with bypass [[overflow]].
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An excellent opportunity for integrating more bioretention into the street is through careful design of curb extensions for traffic control. See [[Roadside safety]] for design advice specific to this application.  
 
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Words in here about this type of bioretention.  
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==Gallery==
 
==Gallery==
 
{{:Curb extensions: Gallery}}
 
{{:Curb extensions: Gallery}}
 
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{{:Extended tree pits: Gallery}}
==Example drawings==
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<pdf width="500" height="300">File:TO curb.pdf</pdf>
      
==See Also==
 
==See Also==
 
*[[Bioretention cells]]
 
*[[Bioretention cells]]
*[[Extended tree pits]]
   
*[[Stormwater planters]]
 
*[[Stormwater planters]]
 
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*[[Mulch]]
 
*[[Mulch]]
 
*[[Bioretention:_Filter_media|Filter media]]
 
*[[Bioretention:_Filter_media|Filter media]]
*[[Choking layer]]
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*[[Choker layer]]
*[[Reservoir_gravel|Reservoir]]
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*[[Reservoir_aggregate|Reservoir]]
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*[[Trees]]
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*[[Soil cells]]

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