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*[[pretreatment| pre-treatment devices]] to retain coarse sediment, trash, debris and floatables,
 
*[[pretreatment| pre-treatment devices]] to retain coarse sediment, trash, debris and floatables,
 
*perforated [[pipes]] embedded in washed gravel connected to maintenance holes and catch basins,
 
*perforated [[pipes]] embedded in washed gravel connected to maintenance holes and catch basins,
*a gently sloping granular [[reservoir aggregate| storage reservoir]] below the perforated pipe.  
+
*a gently sloping granular [[reservoir aggregate| storage reservoir]] below the perforated pipe that may include trench plugs.  
 
'''Optional components include:'''
 
'''Optional components include:'''
 
*[[Geotextile]] to prevent migration of fines into the reservoir;
 
*[[Geotextile]] to prevent migration of fines into the reservoir;

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