Changes

*[[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;